TY  - JOUR
AU  - Peleš Tadić, A
AU  - Blagojević, Vladimir A.
AU  - Stojanović, D
AU  - Ostojić, Sanja
AU  - Tasić, N
AU  - Kosanović, Darko
AU  - Uskoković, P
AU  - Pavlović, V.B
PY  - 2023
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/997
AB  - Poly(vinylidenefluoride)–ZnO (PVDF–ZnO) nanocomposites with mechanically activated ZnO nanoparticle fillers were investigated using thermal and mechanical analysis and AFM and PFM. Differential scanning calorimetry (DSC) investigated the effect of ZnO nanoparticles on the crystallinity of the polymer, under controlled heating and cooling. Atomic force (AFM) microscopy was used to record the surfaces of the samples. Nanocomposite surface roughness shows the presence of the different phases inside of the matrix, where rough samples contain a higher proportion of the β phase. PFM was performed to investigate the piezoresponse of the composites. Nanoidentation showed that the mechanical activation of the filler (ZnO) increases the Young modulus with the activation time. Molecular simulations in periodic systems (PVDF–ZnO spherical nanocluster and nanocylinder composite) were used to investigate the influence of particle size and shape on the Young modulus of different phases of PVDF.
PB  - Elsevier Ltd
T2  - Materials Science and Engineering B: Solid-State Materials for Advanced Technology
T1  - Nanomechanical properties of PVDF–ZnO polymer nanocomposite
VL  - 287
DO  - 10.1016/j.mseb.2022.116126
UR  - conv_1123
ER  - 

@article{
author = "Peleš Tadić, A and Blagojević, Vladimir A. and Stojanović, D and Ostojić, Sanja and Tasić, N and Kosanović, Darko and Uskoković, P and Pavlović, V.B",
year = "2023",
abstract = "Poly(vinylidenefluoride)–ZnO (PVDF–ZnO) nanocomposites with mechanically activated ZnO nanoparticle fillers were investigated using thermal and mechanical analysis and AFM and PFM. Differential scanning calorimetry (DSC) investigated the effect of ZnO nanoparticles on the crystallinity of the polymer, under controlled heating and cooling. Atomic force (AFM) microscopy was used to record the surfaces of the samples. Nanocomposite surface roughness shows the presence of the different phases inside of the matrix, where rough samples contain a higher proportion of the β phase. PFM was performed to investigate the piezoresponse of the composites. Nanoidentation showed that the mechanical activation of the filler (ZnO) increases the Young modulus with the activation time. Molecular simulations in periodic systems (PVDF–ZnO spherical nanocluster and nanocylinder composite) were used to investigate the influence of particle size and shape on the Young modulus of different phases of PVDF.",
publisher = "Elsevier Ltd",
journal = "Materials Science and Engineering B: Solid-State Materials for Advanced Technology",
title = "Nanomechanical properties of PVDF–ZnO polymer nanocomposite",
volume = "287",
doi = "10.1016/j.mseb.2022.116126",
url = "conv_1123"
}

Peleš Tadić, A., Blagojević, V. A., Stojanović, D., Ostojić, S., Tasić, N., Kosanović, D., Uskoković, P.,& Pavlović, V.B. (2023). Nanomechanical properties of PVDF–ZnO polymer nanocomposite. in Materials Science and Engineering B: Solid-State Materials for Advanced Technology
Elsevier Ltd., 287.
https://doi.org/10.1016/j.mseb.2022.116126
conv_1123

Peleš Tadić A, Blagojević VA, Stojanović D, Ostojić S, Tasić N, Kosanović D, Uskoković P, Pavlović V. Nanomechanical properties of PVDF–ZnO polymer nanocomposite. in Materials Science and Engineering B: Solid-State Materials for Advanced Technology. 2023;287.
doi:10.1016/j.mseb.2022.116126
conv_1123 .

Peleš Tadić, A, Blagojević, Vladimir A., Stojanović, D, Ostojić, Sanja, Tasić, N, Kosanović, Darko, Uskoković, P, Pavlović, V.B, "Nanomechanical properties of PVDF–ZnO polymer nanocomposite" in Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 287 (2023),
https://doi.org/10.1016/j.mseb.2022.116126 .,
conv_1123 .

TY  - JOUR
AU  - Simonović, Mladen
AU  - Ostojić, Sanja
AU  - Micić, Darko
AU  - Bisercić-Savić, Marjetka
AU  - Mix, Thorsten
AU  - Glumac, Miodrag
AU  - Pejin, Boris
PY  - 2022
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/886
AB  - This study aimed to develop a fast and reliable protocol for Trinitrophenol-Tris(hydroxymethyl)aminomethane (TNP-Tris) detection applying a beta-lactamase-fusion protein of choice, the natural product-based immunoreagent tool of competitive sensitivity developed herein for the first time. Since the fusion protein 11B3-scFv-beta-lactamase is constructed from a scFv-antibody (11B3) linked to an enzyme (beta-lactamase), the step related to the use of secondary antibody in the enzyme-linked immunosorbent assay (ELISA) is completely omitted. Indeed, this fusion protein itself serves both as binding mean of the antigen model and detecting agent, due to the presence of the naturally occurring enzyme. In such a way, it actually affords the one-step TNP-Tris detection reaching a promising LOD value of 45 +/- 2 fmol or 157 +/- 6 pg/mL. Taken all together, the current protocol does represent much cheaper and significantly less-time consuming alternative compared both to the recombinant antibodies and recombinant phages, previously designed means in our labs for the same purpose. [GRAPHICS] .
PB  - Taylor & Francis Ltd, Abingdon
T2  - Natural Product Research
T1  - A novel and effective natural product-based immunodetection tool for TNT-like compounds
EP  - 861
IS  - 3
SP  - 857
VL  - 36
DO  - 10.1080/14786419.2020.1806269
UR  - conv_864
ER  - 

@article{
author = "Simonović, Mladen and Ostojić, Sanja and Micić, Darko and Bisercić-Savić, Marjetka and Mix, Thorsten and Glumac, Miodrag and Pejin, Boris",
year = "2022",
abstract = "This study aimed to develop a fast and reliable protocol for Trinitrophenol-Tris(hydroxymethyl)aminomethane (TNP-Tris) detection applying a beta-lactamase-fusion protein of choice, the natural product-based immunoreagent tool of competitive sensitivity developed herein for the first time. Since the fusion protein 11B3-scFv-beta-lactamase is constructed from a scFv-antibody (11B3) linked to an enzyme (beta-lactamase), the step related to the use of secondary antibody in the enzyme-linked immunosorbent assay (ELISA) is completely omitted. Indeed, this fusion protein itself serves both as binding mean of the antigen model and detecting agent, due to the presence of the naturally occurring enzyme. In such a way, it actually affords the one-step TNP-Tris detection reaching a promising LOD value of 45 +/- 2 fmol or 157 +/- 6 pg/mL. Taken all together, the current protocol does represent much cheaper and significantly less-time consuming alternative compared both to the recombinant antibodies and recombinant phages, previously designed means in our labs for the same purpose. [GRAPHICS] .",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Natural Product Research",
title = "A novel and effective natural product-based immunodetection tool for TNT-like compounds",
pages = "861-857",
number = "3",
volume = "36",
doi = "10.1080/14786419.2020.1806269",
url = "conv_864"
}

Simonović, M., Ostojić, S., Micić, D., Bisercić-Savić, M., Mix, T., Glumac, M.,& Pejin, B.. (2022). A novel and effective natural product-based immunodetection tool for TNT-like compounds. in Natural Product Research
Taylor & Francis Ltd, Abingdon., 36(3), 857-861.
https://doi.org/10.1080/14786419.2020.1806269
conv_864

Simonović M, Ostojić S, Micić D, Bisercić-Savić M, Mix T, Glumac M, Pejin B. A novel and effective natural product-based immunodetection tool for TNT-like compounds. in Natural Product Research. 2022;36(3):857-861.
doi:10.1080/14786419.2020.1806269
conv_864 .

Simonović, Mladen, Ostojić, Sanja, Micić, Darko, Bisercić-Savić, Marjetka, Mix, Thorsten, Glumac, Miodrag, Pejin, Boris, "A novel and effective natural product-based immunodetection tool for TNT-like compounds" in Natural Product Research, 36, no. 3 (2022):857-861,
https://doi.org/10.1080/14786419.2020.1806269 .,
conv_864 .

TY  - JOUR
AU  - Lubura, J
AU  - Pezo, Lato
AU  - Sandu, M.A
AU  - Voronova, V
AU  - Donsì, F
AU  - Šic Žlabur, J
AU  - Ribić, B
AU  - Peter, Anamarija
AU  - Surić, Jona
AU  - Brandić, Ivan
AU  - Klõga, M
AU  - Ostojić, Sanja
AU  - Pataro, G
AU  - Virsta, A
AU  - Oros, A.E
AU  - Micić, Darko
AU  - Đurović, Saša
AU  - De Feo, G
AU  - Procentese, A
AU  - Voca, Neven
PY  - 2022
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/872
AB  - In this study, an evaluation of food waste generation was conducted, using images taken before and after the daily meals of people aged between 20 and 30 years in Serbia, for the period between 1 January and 31 April in 2022. A convolutional neural network (CNN) was employed for the tasks of recognizing food images before the meal and estimating the percentage of food waste according to the photographs taken. Keeping in mind the vast variates and types of food available, the image recognition and validation of food items present a generally very challenging task. Nevertheless, deep learning has recently been shown to be a very potent image recognition procedure, while CNN presents a state-of-the-art method of deep learning. The CNN technique was implemented to the food detection and food waste estimation tasks throughout the parameter optimization procedure. The images of the most frequently encountered food items were collected from the internet to create an image dataset, covering 157 food categories, which was used to evaluate recognition performance. Each category included between 50 and 200 images, while the total number of images in the database reached 23,552. The CNN model presented good prediction capabilities, showing an accuracy of 0.988 and a loss of 0.102, after the network training cycle. The average food waste per meal, in the frame of the analysis in Serbia, was 21.3%, according to the images collected for food waste evaluation.
PB  - MDPI
T2  - Electronics (Switzerland)
T1  - Food Recognition and Food Waste Estimation Using Convolutional Neural Network
IS  - 22
VL  - 11
DO  - 10.3390/electronics11223746
UR  - conv_1125
ER  - 

@article{
author = "Lubura, J and Pezo, Lato and Sandu, M.A and Voronova, V and Donsì, F and Šic Žlabur, J and Ribić, B and Peter, Anamarija and Surić, Jona and Brandić, Ivan and Klõga, M and Ostojić, Sanja and Pataro, G and Virsta, A and Oros, A.E and Micić, Darko and Đurović, Saša and De Feo, G and Procentese, A and Voca, Neven",
year = "2022",
abstract = "In this study, an evaluation of food waste generation was conducted, using images taken before and after the daily meals of people aged between 20 and 30 years in Serbia, for the period between 1 January and 31 April in 2022. A convolutional neural network (CNN) was employed for the tasks of recognizing food images before the meal and estimating the percentage of food waste according to the photographs taken. Keeping in mind the vast variates and types of food available, the image recognition and validation of food items present a generally very challenging task. Nevertheless, deep learning has recently been shown to be a very potent image recognition procedure, while CNN presents a state-of-the-art method of deep learning. The CNN technique was implemented to the food detection and food waste estimation tasks throughout the parameter optimization procedure. The images of the most frequently encountered food items were collected from the internet to create an image dataset, covering 157 food categories, which was used to evaluate recognition performance. Each category included between 50 and 200 images, while the total number of images in the database reached 23,552. The CNN model presented good prediction capabilities, showing an accuracy of 0.988 and a loss of 0.102, after the network training cycle. The average food waste per meal, in the frame of the analysis in Serbia, was 21.3%, according to the images collected for food waste evaluation.",
publisher = "MDPI",
journal = "Electronics (Switzerland)",
title = "Food Recognition and Food Waste Estimation Using Convolutional Neural Network",
number = "22",
volume = "11",
doi = "10.3390/electronics11223746",
url = "conv_1125"
}

Lubura, J., Pezo, L., Sandu, M.A, Voronova, V., Donsì, F., Šic Žlabur, J., Ribić, B., Peter, A., Surić, J., Brandić, I., Klõga, M., Ostojić, S., Pataro, G., Virsta, A., Oros, A.E, Micić, D., Đurović, S., De Feo, G., Procentese, A.,& Voca, N.. (2022). Food Recognition and Food Waste Estimation Using Convolutional Neural Network. in Electronics (Switzerland)
MDPI., 11(22).
https://doi.org/10.3390/electronics11223746
conv_1125

Lubura J, Pezo L, Sandu M, Voronova V, Donsì F, Šic Žlabur J, Ribić B, Peter A, Surić J, Brandić I, Klõga M, Ostojić S, Pataro G, Virsta A, Oros A, Micić D, Đurović S, De Feo G, Procentese A, Voca N. Food Recognition and Food Waste Estimation Using Convolutional Neural Network. in Electronics (Switzerland). 2022;11(22).
doi:10.3390/electronics11223746
conv_1125 .

Lubura, J, Pezo, Lato, Sandu, M.A, Voronova, V, Donsì, F, Šic Žlabur, J, Ribić, B, Peter, Anamarija, Surić, Jona, Brandić, Ivan, Klõga, M, Ostojić, Sanja, Pataro, G, Virsta, A, Oros, A.E, Micić, Darko, Đurović, Saša, De Feo, G, Procentese, A, Voca, Neven, "Food Recognition and Food Waste Estimation Using Convolutional Neural Network" in Electronics (Switzerland), 11, no. 22 (2022),
https://doi.org/10.3390/electronics11223746 .,
conv_1125 .

TY  - JOUR
AU  - Pergal, Marija, V
AU  - Dojčinović, Biljana
AU  - Nikodinović-Runić, Jasmina
AU  - Drazić, Goran
AU  - Zabukovec Logar, Nataša
AU  - Ostojić, Sanja
AU  - Antić, Bratislav
PY  - 2022
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/893
AB  - In situ polymerization was used to produce novel AgFeO2"PEG/polyurethane network nanocomposites (NP-PUs) with 30-60 wt% of soft poly(dimethylsiloxane) segments in polyurethane (PU), containing 1 wt% of PEG-coated AgFeO2 nanoparticles, AgFeO2"PEG. Physicochemical properties and in vitro biological activity of the NP-PUs were systematically evaluated in terms of AgFeO2"PEG (NP) addition and soft segment content. High-angle annular dark-field transmission electron microscopy showed that the nanoparticles were generally uniformly distributed in the PU matrix. Increased soft segment content caused significantly increased intensity of the broad, amorphous X-ray diffraction peaks of crystalline AgFeO2, probably because the chemical composition of PU affected the distribution of nanoparticles. The Young modulus, hardness, and plasticity of the NP-PUs were higher than for pure PU and increased with decreasing soft segment content. Decreased soft segment content induced higher microphase separation, increased hydrophilicity and swelling ability, but decreased cross-linking density. Additionally, NP-PUs had higher glass transition temperatures, improved thermal stability, and enhanced nanomechanical performance over pure PU. The NP-PUs demonstrated good selective inhibition of Candida albicans and Candida parapsilosis (30-55%) and no pronounced cytotoxicity to MRC5 human lung fibroblasts. Among the investigated AgFeO2"PEG/PUs, the best antifungal activity was shown by composites with 30 and 40 wt% soft segments. Consequently, the novel AgFeO2"PEG/polyurethane network nanocomposites could be further optimized to be used as biocompatible surfaces that also prevent formation of fungal biofilms. [GRAPHICS] .
PB  - Springer, New York
T2  - Journal of Materials Science
T1  - Synthesis, physicochemical, and antimicrobial characteristics of novel poly(urethane-siloxane) network/silver ferrite nanocomposites
EP  - 7848
IS  - 16
SP  - 7827
VL  - 57
DO  - 10.1007/s10853-022-07178-9
UR  - conv_999
ER  - 

@article{
author = "Pergal, Marija, V and Dojčinović, Biljana and Nikodinović-Runić, Jasmina and Drazić, Goran and Zabukovec Logar, Nataša and Ostojić, Sanja and Antić, Bratislav",
year = "2022",
abstract = "In situ polymerization was used to produce novel AgFeO2"PEG/polyurethane network nanocomposites (NP-PUs) with 30-60 wt% of soft poly(dimethylsiloxane) segments in polyurethane (PU), containing 1 wt% of PEG-coated AgFeO2 nanoparticles, AgFeO2"PEG. Physicochemical properties and in vitro biological activity of the NP-PUs were systematically evaluated in terms of AgFeO2"PEG (NP) addition and soft segment content. High-angle annular dark-field transmission electron microscopy showed that the nanoparticles were generally uniformly distributed in the PU matrix. Increased soft segment content caused significantly increased intensity of the broad, amorphous X-ray diffraction peaks of crystalline AgFeO2, probably because the chemical composition of PU affected the distribution of nanoparticles. The Young modulus, hardness, and plasticity of the NP-PUs were higher than for pure PU and increased with decreasing soft segment content. Decreased soft segment content induced higher microphase separation, increased hydrophilicity and swelling ability, but decreased cross-linking density. Additionally, NP-PUs had higher glass transition temperatures, improved thermal stability, and enhanced nanomechanical performance over pure PU. The NP-PUs demonstrated good selective inhibition of Candida albicans and Candida parapsilosis (30-55%) and no pronounced cytotoxicity to MRC5 human lung fibroblasts. Among the investigated AgFeO2"PEG/PUs, the best antifungal activity was shown by composites with 30 and 40 wt% soft segments. Consequently, the novel AgFeO2"PEG/polyurethane network nanocomposites could be further optimized to be used as biocompatible surfaces that also prevent formation of fungal biofilms. [GRAPHICS] .",
publisher = "Springer, New York",
journal = "Journal of Materials Science",
title = "Synthesis, physicochemical, and antimicrobial characteristics of novel poly(urethane-siloxane) network/silver ferrite nanocomposites",
pages = "7848-7827",
number = "16",
volume = "57",
doi = "10.1007/s10853-022-07178-9",
url = "conv_999"
}

Pergal, M. V., Dojčinović, B., Nikodinović-Runić, J., Drazić, G., Zabukovec Logar, N., Ostojić, S.,& Antić, B.. (2022). Synthesis, physicochemical, and antimicrobial characteristics of novel poly(urethane-siloxane) network/silver ferrite nanocomposites. in Journal of Materials Science
Springer, New York., 57(16), 7827-7848.
https://doi.org/10.1007/s10853-022-07178-9
conv_999

Pergal MV, Dojčinović B, Nikodinović-Runić J, Drazić G, Zabukovec Logar N, Ostojić S, Antić B. Synthesis, physicochemical, and antimicrobial characteristics of novel poly(urethane-siloxane) network/silver ferrite nanocomposites. in Journal of Materials Science. 2022;57(16):7827-7848.
doi:10.1007/s10853-022-07178-9
conv_999 .

Pergal, Marija, V, Dojčinović, Biljana, Nikodinović-Runić, Jasmina, Drazić, Goran, Zabukovec Logar, Nataša, Ostojić, Sanja, Antić, Bratislav, "Synthesis, physicochemical, and antimicrobial characteristics of novel poly(urethane-siloxane) network/silver ferrite nanocomposites" in Journal of Materials Science, 57, no. 16 (2022):7827-7848,
https://doi.org/10.1007/s10853-022-07178-9 .,
conv_999 .

TY  - JOUR
AU  - Pergal, Marija V.
AU  - Ostojić, Sanja
AU  - Steinhart, Miloš
AU  - Stefanović, Ivan S.
AU  - Pezo, Lato
AU  - Spirkova, Milena
PY  - 2022
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/948
AB  - Thermoplastic poly(urethane-siloxane)/organoclay nanocomposites (TPU NCs) with different hard segment content (20-55 wt. %) were prepared by in situ polymerization in the presence of organically modified montmorillonite as a nanofiller (Cloisite 30B; 1 wt. %). Hydroxyl-terminated ethoxypropyl-poly(dimethylsiloxane) was used as soft segment, while 4,4'-methylenediphenyl diisocyanate and 1,4-butanediol were the hard segment components. The study of the influence of the hard segment content on the functional properties of TPU NCs was performed by Fourier transform infrared (FTIR) spectroscopy, X-ray diffractometry (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM), dynamic mechanical thermal analyses (DMTA), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), water contact angle and water absorption tests. The results revealed that TPU NCs with the increasing hard segment content exhibit higher values of degree of microphase separation, melting temperature of the hard segments, degree of crystallinity, storage modulus (except for TPU NC-55), but lower thermal stability and hydrophobicity. TPU NC films were hydrophobic and their free surface energy was in the range from 17.7 to 24.9 mJ m(-2). This work highlights how the composition of TPU NCs would affect their functional properties and provide an additional composition intended for designing advanced TPU NC materials for special biomedical applications.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Nanocomposites made from thermoplastic linear poly(urethane-siloxane) and organoclay: Composition impact on the properties
EP  - 1218
IS  - 10
SP  - 1203
VL  - 87
DO  - 10.2298/JSC220223036P
UR  - conv_1028
ER  - 

@article{
author = "Pergal, Marija V. and Ostojić, Sanja and Steinhart, Miloš and Stefanović, Ivan S. and Pezo, Lato and Spirkova, Milena",
year = "2022",
abstract = "Thermoplastic poly(urethane-siloxane)/organoclay nanocomposites (TPU NCs) with different hard segment content (20-55 wt. %) were prepared by in situ polymerization in the presence of organically modified montmorillonite as a nanofiller (Cloisite 30B; 1 wt. %). Hydroxyl-terminated ethoxypropyl-poly(dimethylsiloxane) was used as soft segment, while 4,4'-methylenediphenyl diisocyanate and 1,4-butanediol were the hard segment components. The study of the influence of the hard segment content on the functional properties of TPU NCs was performed by Fourier transform infrared (FTIR) spectroscopy, X-ray diffractometry (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM), dynamic mechanical thermal analyses (DMTA), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), water contact angle and water absorption tests. The results revealed that TPU NCs with the increasing hard segment content exhibit higher values of degree of microphase separation, melting temperature of the hard segments, degree of crystallinity, storage modulus (except for TPU NC-55), but lower thermal stability and hydrophobicity. TPU NC films were hydrophobic and their free surface energy was in the range from 17.7 to 24.9 mJ m(-2). This work highlights how the composition of TPU NCs would affect their functional properties and provide an additional composition intended for designing advanced TPU NC materials for special biomedical applications.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Nanocomposites made from thermoplastic linear poly(urethane-siloxane) and organoclay: Composition impact on the properties",
pages = "1218-1203",
number = "10",
volume = "87",
doi = "10.2298/JSC220223036P",
url = "conv_1028"
}

Pergal, M. V., Ostojić, S., Steinhart, M., Stefanović, I. S., Pezo, L.,& Spirkova, M.. (2022). Nanocomposites made from thermoplastic linear poly(urethane-siloxane) and organoclay: Composition impact on the properties. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 87(10), 1203-1218.
https://doi.org/10.2298/JSC220223036P
conv_1028

Pergal MV, Ostojić S, Steinhart M, Stefanović IS, Pezo L, Spirkova M. Nanocomposites made from thermoplastic linear poly(urethane-siloxane) and organoclay: Composition impact on the properties. in Journal of the Serbian Chemical Society. 2022;87(10):1203-1218.
doi:10.2298/JSC220223036P
conv_1028 .

Pergal, Marija V., Ostojić, Sanja, Steinhart, Miloš, Stefanović, Ivan S., Pezo, Lato, Spirkova, Milena, "Nanocomposites made from thermoplastic linear poly(urethane-siloxane) and organoclay: Composition impact on the properties" in Journal of the Serbian Chemical Society, 87, no. 10 (2022):1203-1218,
https://doi.org/10.2298/JSC220223036P .,
conv_1028 .

TY  - JOUR
AU  - Pergal, Marija, V
AU  - Gojgić-Cvijović, Gordana
AU  - Steinhart, Miloš
AU  - Manojlović, Dragan
AU  - Ostojić, Sanja
AU  - Pezo, Lato
AU  - Spirkova, Milena
PY  - 2022
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/927
AB  - A series of novel polyurethane network/organoclay nanocomposites (PUN-NCs) with different soft segment contents (30-60 wt%) was prepared by in situ polymerization in solution and characterized. PU network (PUN) was made from poly(dimethylsiloxane)-based macrodiol as the soft segment and 4,4'-methyl-enediphenyldiisocyanate and hyperbranched polyester of the third pseudo generation as the hard segment. Nanocomposites were obtained by dispersion of organically modified montmorillonite (Cloisite 30B) nanofiller (0.5 wt%). The influence of the soft segment content on the functional properties of PUN-NCs was studied by Fourier transform infrared (FTIR), small-angle and near wide-angle X-ray scattering (SWAXS), thermogravimetric analysis (TGA), dynamic mechanical thermal analyses (DMTA), differential scanning calorimetry (DSC), nanoindentation, atomic force microscopy (AFM), scanning electron microscopy (SEM), and swelling behavior, water absorption and contact angle measurements. The biodegradation process was evaluated using mixed cultures of microorganisms that originated from soil. Mechanically strong PUN-NC materials in the form of films were obtained, pointing to good dispersion and the existence of exfoliated morphology of Cloisite 30B within the PUN matrix, and the nanocomposites with the abovementioned characteristics were obtained as a function of the soft segment content. The decrease of the soft segment content induced a higher degree of phase separated microstructure, increase of Young's modulus, hardness, plasticity, storage modulus, glass transition temperature, surface free energy and swelling ability in tetrahydrofuran, but at the same time, it is responsible for the decrease of crosslinking density and hydrophobicity of PUN-NCs. By choosing adequate soft segment content, the prepared materials can potentially be designed for coating applications, such as top coating materials in environmental conditions.
PB  - Elsevier
T2  - Progress in Organic Coatings
T1  - Novel polyurethane network/organoclay nanocomposites: Microstructure and physicochemical properties
VL  - 163
DO  - 10.1016/j.porgcoat.2021.106664
UR  - conv_975
ER  - 

@article{
author = "Pergal, Marija, V and Gojgić-Cvijović, Gordana and Steinhart, Miloš and Manojlović, Dragan and Ostojić, Sanja and Pezo, Lato and Spirkova, Milena",
year = "2022",
abstract = "A series of novel polyurethane network/organoclay nanocomposites (PUN-NCs) with different soft segment contents (30-60 wt%) was prepared by in situ polymerization in solution and characterized. PU network (PUN) was made from poly(dimethylsiloxane)-based macrodiol as the soft segment and 4,4'-methyl-enediphenyldiisocyanate and hyperbranched polyester of the third pseudo generation as the hard segment. Nanocomposites were obtained by dispersion of organically modified montmorillonite (Cloisite 30B) nanofiller (0.5 wt%). The influence of the soft segment content on the functional properties of PUN-NCs was studied by Fourier transform infrared (FTIR), small-angle and near wide-angle X-ray scattering (SWAXS), thermogravimetric analysis (TGA), dynamic mechanical thermal analyses (DMTA), differential scanning calorimetry (DSC), nanoindentation, atomic force microscopy (AFM), scanning electron microscopy (SEM), and swelling behavior, water absorption and contact angle measurements. The biodegradation process was evaluated using mixed cultures of microorganisms that originated from soil. Mechanically strong PUN-NC materials in the form of films were obtained, pointing to good dispersion and the existence of exfoliated morphology of Cloisite 30B within the PUN matrix, and the nanocomposites with the abovementioned characteristics were obtained as a function of the soft segment content. The decrease of the soft segment content induced a higher degree of phase separated microstructure, increase of Young's modulus, hardness, plasticity, storage modulus, glass transition temperature, surface free energy and swelling ability in tetrahydrofuran, but at the same time, it is responsible for the decrease of crosslinking density and hydrophobicity of PUN-NCs. By choosing adequate soft segment content, the prepared materials can potentially be designed for coating applications, such as top coating materials in environmental conditions.",
publisher = "Elsevier",
journal = "Progress in Organic Coatings",
title = "Novel polyurethane network/organoclay nanocomposites: Microstructure and physicochemical properties",
volume = "163",
doi = "10.1016/j.porgcoat.2021.106664",
url = "conv_975"
}

Pergal, M. V., Gojgić-Cvijović, G., Steinhart, M., Manojlović, D., Ostojić, S., Pezo, L.,& Spirkova, M.. (2022). Novel polyurethane network/organoclay nanocomposites: Microstructure and physicochemical properties. in Progress in Organic Coatings
Elsevier., 163.
https://doi.org/10.1016/j.porgcoat.2021.106664
conv_975

Pergal MV, Gojgić-Cvijović G, Steinhart M, Manojlović D, Ostojić S, Pezo L, Spirkova M. Novel polyurethane network/organoclay nanocomposites: Microstructure and physicochemical properties. in Progress in Organic Coatings. 2022;163.
doi:10.1016/j.porgcoat.2021.106664
conv_975 .

Pergal, Marija, V, Gojgić-Cvijović, Gordana, Steinhart, Miloš, Manojlović, Dragan, Ostojić, Sanja, Pezo, Lato, Spirkova, Milena, "Novel polyurethane network/organoclay nanocomposites: Microstructure and physicochemical properties" in Progress in Organic Coatings, 163 (2022),
https://doi.org/10.1016/j.porgcoat.2021.106664 .,
conv_975 .

TY  - JOUR
AU  - Simonović, Mladen
AU  - Ostojić, Sanja
AU  - Micić, Darko
AU  - Pejin, Boris
PY  - 2021
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/855
AB  - This study focuses on the impact of low and high temperature regimes on the chemical composition and antioxidativity of low sugar berry fruits jellies. High quality fruits (strawberry, raspberry and blackberry) were collected from Western Serbia region, quite well recognised both nationally and internationally due to an extremely well developed practice in growing berry fruits. The obtained results have clearly indicated the importance of low temperature regime for enriched contents of both total phenolics and anthocyanins followed by an enhanced antioxidativity. Rubus fruticosus L. Cacak Thornless cultivar, the only autochthonous berry fruit variety screened herein, may be firmly recommended as a raw material for industrial production of low sugar blackberry jellies with exceptional characteristics. This innovative procedure of preparing berry fruit jellies have encompassed the application of low temperature regime (55 degrees C), lower content of sugar (40%), seeds separation from jellies followed by no use of pectin throughout the whole process. [GRAPHICS] .
PB  - Taylor & Francis Ltd, Abingdon
T2  - Natural Product Research
T1  - Low sugar jellies of berry fruits: the impact of low vs. high temperature regime on their chemical composition and antioxidativity
EP  - 341
IS  - 2
SP  - 337
VL  - 35
DO  - 10.1080/14786419.2019.1622109
UR  - conv_780
ER  - 

@article{
author = "Simonović, Mladen and Ostojić, Sanja and Micić, Darko and Pejin, Boris",
year = "2021",
abstract = "This study focuses on the impact of low and high temperature regimes on the chemical composition and antioxidativity of low sugar berry fruits jellies. High quality fruits (strawberry, raspberry and blackberry) were collected from Western Serbia region, quite well recognised both nationally and internationally due to an extremely well developed practice in growing berry fruits. The obtained results have clearly indicated the importance of low temperature regime for enriched contents of both total phenolics and anthocyanins followed by an enhanced antioxidativity. Rubus fruticosus L. Cacak Thornless cultivar, the only autochthonous berry fruit variety screened herein, may be firmly recommended as a raw material for industrial production of low sugar blackberry jellies with exceptional characteristics. This innovative procedure of preparing berry fruit jellies have encompassed the application of low temperature regime (55 degrees C), lower content of sugar (40%), seeds separation from jellies followed by no use of pectin throughout the whole process. [GRAPHICS] .",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Natural Product Research",
title = "Low sugar jellies of berry fruits: the impact of low vs. high temperature regime on their chemical composition and antioxidativity",
pages = "341-337",
number = "2",
volume = "35",
doi = "10.1080/14786419.2019.1622109",
url = "conv_780"
}

Simonović, M., Ostojić, S., Micić, D.,& Pejin, B.. (2021). Low sugar jellies of berry fruits: the impact of low vs. high temperature regime on their chemical composition and antioxidativity. in Natural Product Research
Taylor & Francis Ltd, Abingdon., 35(2), 337-341.
https://doi.org/10.1080/14786419.2019.1622109
conv_780

Simonović M, Ostojić S, Micić D, Pejin B. Low sugar jellies of berry fruits: the impact of low vs. high temperature regime on their chemical composition and antioxidativity. in Natural Product Research. 2021;35(2):337-341.
doi:10.1080/14786419.2019.1622109
conv_780 .

Simonović, Mladen, Ostojić, Sanja, Micić, Darko, Pejin, Boris, "Low sugar jellies of berry fruits: the impact of low vs. high temperature regime on their chemical composition and antioxidativity" in Natural Product Research, 35, no. 2 (2021):337-341,
https://doi.org/10.1080/14786419.2019.1622109 .,
conv_780 .

TY  - JOUR
AU  - Pergal, Marija, V
AU  - Brkljacić, Jelena
AU  - Tovilović-Kovacević, Gordana
AU  - Spirkova, Milena
AU  - Kodranov, Igor D.
AU  - Manojlović, Dragan
AU  - Ostojić, Sanja
AU  - Knežević, Nikola Z.
PY  - 2021
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/804
AB  - Novel polyurethane nanocomposite (PUN) materials containing different surface-functionalized mesoporous silica nanoparticles (MSNs) were prepared by in situ polymerization methodology. Polyurethane network was formed from poly(dimethylsiloxane)-based macrodiol (PDMS), 4,4 '-methylenediphenyldiisocyanate (MDI), and hyperbranched polyester of the second pseudo-generation (BH-20; used as crosslinking agent). PU and PU/MSN nanocomposites contained equal ratios of soft PDMS and hard MDI-BH-20 segments. Non-functionalized and surface-functionalized (with 3-(trihydroxysilyl)propyl methylphosphonate (FOMSN) and 2-[methoxy(polyethyleneoxy)6-9-propyl]trimethoxysilane (PEGMSN)) MSNs were used as the nanofillers at a concentration of 1 wt%. Prepared materials were characterized by Fourier transform infrared (FTIR) spectroscopy, atomic force microscopy (AFM), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), dynamic mechanical thermal analyses (DMTA), nanoindentation, equilibrium swelling and water absorption measurements. Characteristics of the prepared PUNs when in contact with a biological environment were assessed through testing their biocompatibility, protein adsorption and adhesion of endothelial cells. The favourable influence of MSNs on the physico-chemical and biological characteristics of these novel PUN materials was identified, which evidences their vast applicability potential as coatings for medical devices and implants.
PB  - Elsevier
T2  - Progress in Organic Coatings
T1  - Effect of mesoporous silica nanoparticles on the properties of polyurethane network composites
VL  - 151
DO  - 10.1016/j.porgcoat.2020.106049
UR  - conv_906
ER  - 

@article{
author = "Pergal, Marija, V and Brkljacić, Jelena and Tovilović-Kovacević, Gordana and Spirkova, Milena and Kodranov, Igor D. and Manojlović, Dragan and Ostojić, Sanja and Knežević, Nikola Z.",
year = "2021",
abstract = "Novel polyurethane nanocomposite (PUN) materials containing different surface-functionalized mesoporous silica nanoparticles (MSNs) were prepared by in situ polymerization methodology. Polyurethane network was formed from poly(dimethylsiloxane)-based macrodiol (PDMS), 4,4 '-methylenediphenyldiisocyanate (MDI), and hyperbranched polyester of the second pseudo-generation (BH-20; used as crosslinking agent). PU and PU/MSN nanocomposites contained equal ratios of soft PDMS and hard MDI-BH-20 segments. Non-functionalized and surface-functionalized (with 3-(trihydroxysilyl)propyl methylphosphonate (FOMSN) and 2-[methoxy(polyethyleneoxy)6-9-propyl]trimethoxysilane (PEGMSN)) MSNs were used as the nanofillers at a concentration of 1 wt%. Prepared materials were characterized by Fourier transform infrared (FTIR) spectroscopy, atomic force microscopy (AFM), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), dynamic mechanical thermal analyses (DMTA), nanoindentation, equilibrium swelling and water absorption measurements. Characteristics of the prepared PUNs when in contact with a biological environment were assessed through testing their biocompatibility, protein adsorption and adhesion of endothelial cells. The favourable influence of MSNs on the physico-chemical and biological characteristics of these novel PUN materials was identified, which evidences their vast applicability potential as coatings for medical devices and implants.",
publisher = "Elsevier",
journal = "Progress in Organic Coatings",
title = "Effect of mesoporous silica nanoparticles on the properties of polyurethane network composites",
volume = "151",
doi = "10.1016/j.porgcoat.2020.106049",
url = "conv_906"
}

Pergal, M. V., Brkljacić, J., Tovilović-Kovacević, G., Spirkova, M., Kodranov, I. D., Manojlović, D., Ostojić, S.,& Knežević, N. Z.. (2021). Effect of mesoporous silica nanoparticles on the properties of polyurethane network composites. in Progress in Organic Coatings
Elsevier., 151.
https://doi.org/10.1016/j.porgcoat.2020.106049
conv_906

Pergal MV, Brkljacić J, Tovilović-Kovacević G, Spirkova M, Kodranov ID, Manojlović D, Ostojić S, Knežević NZ. Effect of mesoporous silica nanoparticles on the properties of polyurethane network composites. in Progress in Organic Coatings. 2021;151.
doi:10.1016/j.porgcoat.2020.106049
conv_906 .

Pergal, Marija, V, Brkljacić, Jelena, Tovilović-Kovacević, Gordana, Spirkova, Milena, Kodranov, Igor D., Manojlović, Dragan, Ostojić, Sanja, Knežević, Nikola Z., "Effect of mesoporous silica nanoparticles on the properties of polyurethane network composites" in Progress in Organic Coatings, 151 (2021),
https://doi.org/10.1016/j.porgcoat.2020.106049 .,
conv_906 .

TY  - JOUR
AU  - Riabov, Pavel A.
AU  - Micić, Darko
AU  - Bozović, Rade B.
AU  - Jovanović, Dušan
AU  - Tomić, Ana
AU  - Sovljanski, Olja
AU  - Filip, Snežana
AU  - Tosti, Tomislav
AU  - Ostojić, Sanja
AU  - Blagojević, Stevan
AU  - Đurović, Saša
PY  - 2020
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/756
AB  - Laurus nobilis (bay laurel) form Serbia (SRBL) and Russia (RFBL) were analyzed in order to establish the chemical profile, thermal properties and biological activity. The GC/MS analysis showed that alpha-pinene (31.97%) is principal compound in the RFBL followed by eucalyptol (27.95%) and alpha-terpineol (10.28%). In the case of the SRBL, eucalyptol (40.51%) is the most abundant compound followed by alpha-terpineol (15.46%), while alpha-pinene was found in much lower amount (4.45%). Thermal analysis showed that the evaporation process of both oils was complex process and took place in two phases. Moreover, results indicated that the SRBL evaporated slower at the higher temperatures than the RFBL. In order to assess biological activity, the antioxidant and antimicrobial activities were investigated. The SRBL was more potent antioxidant agent in the case of both assays (DPPH and total reduction capacity). In the case of the antimicrobial activity, the SRBL showed greater potential of antimicrobial activities toward all tested microorganisms, while RFBL was found to be effective against all the bacteria and yeast, but did not possess any inhibitory action against fungi. Results indicate that both oils may be used in the food and pharmaceutical industries as antioxidant and antimicrobial agent.
PB  - Elsevier
T2  - Industrial Crops and Products
T1  - The chemical, biological and thermal characteristics and gastronomical perspectives of Laurus nobilis essential oil from different geographical origin
VL  - 151
DO  - 10.1016/j.indcrop.2020.112498
UR  - conv_847
ER  - 

@article{
author = "Riabov, Pavel A. and Micić, Darko and Bozović, Rade B. and Jovanović, Dušan and Tomić, Ana and Sovljanski, Olja and Filip, Snežana and Tosti, Tomislav and Ostojić, Sanja and Blagojević, Stevan and Đurović, Saša",
year = "2020",
abstract = "Laurus nobilis (bay laurel) form Serbia (SRBL) and Russia (RFBL) were analyzed in order to establish the chemical profile, thermal properties and biological activity. The GC/MS analysis showed that alpha-pinene (31.97%) is principal compound in the RFBL followed by eucalyptol (27.95%) and alpha-terpineol (10.28%). In the case of the SRBL, eucalyptol (40.51%) is the most abundant compound followed by alpha-terpineol (15.46%), while alpha-pinene was found in much lower amount (4.45%). Thermal analysis showed that the evaporation process of both oils was complex process and took place in two phases. Moreover, results indicated that the SRBL evaporated slower at the higher temperatures than the RFBL. In order to assess biological activity, the antioxidant and antimicrobial activities were investigated. The SRBL was more potent antioxidant agent in the case of both assays (DPPH and total reduction capacity). In the case of the antimicrobial activity, the SRBL showed greater potential of antimicrobial activities toward all tested microorganisms, while RFBL was found to be effective against all the bacteria and yeast, but did not possess any inhibitory action against fungi. Results indicate that both oils may be used in the food and pharmaceutical industries as antioxidant and antimicrobial agent.",
publisher = "Elsevier",
journal = "Industrial Crops and Products",
title = "The chemical, biological and thermal characteristics and gastronomical perspectives of Laurus nobilis essential oil from different geographical origin",
volume = "151",
doi = "10.1016/j.indcrop.2020.112498",
url = "conv_847"
}

Riabov, P. A., Micić, D., Bozović, R. B., Jovanović, D., Tomić, A., Sovljanski, O., Filip, S., Tosti, T., Ostojić, S., Blagojević, S.,& Đurović, S.. (2020). The chemical, biological and thermal characteristics and gastronomical perspectives of Laurus nobilis essential oil from different geographical origin. in Industrial Crops and Products
Elsevier., 151.
https://doi.org/10.1016/j.indcrop.2020.112498
conv_847

Riabov PA, Micić D, Bozović RB, Jovanović D, Tomić A, Sovljanski O, Filip S, Tosti T, Ostojić S, Blagojević S, Đurović S. The chemical, biological and thermal characteristics and gastronomical perspectives of Laurus nobilis essential oil from different geographical origin. in Industrial Crops and Products. 2020;151.
doi:10.1016/j.indcrop.2020.112498
conv_847 .

Riabov, Pavel A., Micić, Darko, Bozović, Rade B., Jovanović, Dušan, Tomić, Ana, Sovljanski, Olja, Filip, Snežana, Tosti, Tomislav, Ostojić, Sanja, Blagojević, Stevan, Đurović, Saša, "The chemical, biological and thermal characteristics and gastronomical perspectives of Laurus nobilis essential oil from different geographical origin" in Industrial Crops and Products, 151 (2020),
https://doi.org/10.1016/j.indcrop.2020.112498 .,
conv_847 .

TY  - JOUR
AU  - Jaksić, Jovana
AU  - Ostojić, Sanja
AU  - Micić, Darko
AU  - Tokic Vujosević, Zorana
AU  - Milovanović, Jelena
AU  - Karkalić, Radovan
AU  - O'Connor, Kevin E.
AU  - Kenny, Shane T.
AU  - Casey, William
AU  - Nikodinović-Runić, Jasmina
AU  - Maslak, Veselin
PY  - 2020
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/735
AB  - In the present work, we describe the chemical synthesis of 3-HFAs as prominent derivatives of fatty acids and assess if they could be applied as phase change materials (PCM). In addition, 3-HFAs were obtained by depolymerization of a bacterial biopolymeric material, polyhydroxyalkanoate. Thermal properties of 3-hydoxyoctanoic, decanoic, and dodecanoic acids are reported for the first time. These materials showed the potential to be applied as PCM in temperature range from 33 degrees C to 66 degrees C. In order to expand the temperature range for application of 3-HFAs as PCM, eutectic mass ratios of three kinds of binary mixtures of 3-HFAs were calculated, and their properties were predicted using the Schroder-van Laar equation. Thermal properties of these mixtures were validated by differential scanning calorimetry (DSC) analysis. These results showed that eutectics considerably expanded the scope of applications of 3-HFAs as PCMs. 3-HFAs originating from biotechnologically obtained polyhydroxyalkanoates also showed potential to be applied in development of PCMs.
PB  - Wiley, Hoboken
T2  - International Journal of Energy Research
T1  - Thermal properties of 3-hydroxy fatty acids and their binary mixtures as phase change energy storage materials
EP  - 1302
IS  - 2
SP  - 1294
VL  - 44
DO  - 10.1002/er.4934
UR  - conv_808
ER  - 

@article{
author = "Jaksić, Jovana and Ostojić, Sanja and Micić, Darko and Tokic Vujosević, Zorana and Milovanović, Jelena and Karkalić, Radovan and O'Connor, Kevin E. and Kenny, Shane T. and Casey, William and Nikodinović-Runić, Jasmina and Maslak, Veselin",
year = "2020",
abstract = "In the present work, we describe the chemical synthesis of 3-HFAs as prominent derivatives of fatty acids and assess if they could be applied as phase change materials (PCM). In addition, 3-HFAs were obtained by depolymerization of a bacterial biopolymeric material, polyhydroxyalkanoate. Thermal properties of 3-hydoxyoctanoic, decanoic, and dodecanoic acids are reported for the first time. These materials showed the potential to be applied as PCM in temperature range from 33 degrees C to 66 degrees C. In order to expand the temperature range for application of 3-HFAs as PCM, eutectic mass ratios of three kinds of binary mixtures of 3-HFAs were calculated, and their properties were predicted using the Schroder-van Laar equation. Thermal properties of these mixtures were validated by differential scanning calorimetry (DSC) analysis. These results showed that eutectics considerably expanded the scope of applications of 3-HFAs as PCMs. 3-HFAs originating from biotechnologically obtained polyhydroxyalkanoates also showed potential to be applied in development of PCMs.",
publisher = "Wiley, Hoboken",
journal = "International Journal of Energy Research",
title = "Thermal properties of 3-hydroxy fatty acids and their binary mixtures as phase change energy storage materials",
pages = "1302-1294",
number = "2",
volume = "44",
doi = "10.1002/er.4934",
url = "conv_808"
}

Jaksić, J., Ostojić, S., Micić, D., Tokic Vujosević, Z., Milovanović, J., Karkalić, R., O'Connor, K. E., Kenny, S. T., Casey, W., Nikodinović-Runić, J.,& Maslak, V.. (2020). Thermal properties of 3-hydroxy fatty acids and their binary mixtures as phase change energy storage materials. in International Journal of Energy Research
Wiley, Hoboken., 44(2), 1294-1302.
https://doi.org/10.1002/er.4934
conv_808

Jaksić J, Ostojić S, Micić D, Tokic Vujosević Z, Milovanović J, Karkalić R, O'Connor KE, Kenny ST, Casey W, Nikodinović-Runić J, Maslak V. Thermal properties of 3-hydroxy fatty acids and their binary mixtures as phase change energy storage materials. in International Journal of Energy Research. 2020;44(2):1294-1302.
doi:10.1002/er.4934
conv_808 .

Jaksić, Jovana, Ostojić, Sanja, Micić, Darko, Tokic Vujosević, Zorana, Milovanović, Jelena, Karkalić, Radovan, O'Connor, Kevin E., Kenny, Shane T., Casey, William, Nikodinović-Runić, Jasmina, Maslak, Veselin, "Thermal properties of 3-hydroxy fatty acids and their binary mixtures as phase change energy storage materials" in International Journal of Energy Research, 44, no. 2 (2020):1294-1302,
https://doi.org/10.1002/er.4934 .,
conv_808 .

TY  - JOUR
AU  - Jeremić, Dejan
AU  - Anđelković, Ljubica
AU  - Milenković, Milica R.
AU  - Suljagić, Marija
AU  - Sumar Ristović, Maja
AU  - Ostojić, Sanja
AU  - Nikolić, Aleksandar S.
AU  - Vulić, Predrag
AU  - Brceski, Ilija
AU  - Pavlović, Vladimir
PY  - 2020
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/720
AB  - This work is the first report of a very simple and fast one-pot synthesis of nickel oxide (NiO) and hematite (alpha-Fe2O3) nanoparticles by thermal decomposition of transition metal aqua complexes with camphor sulfonate anions. Obtained nanopowders were characterized by X-ray powder diffraction, Fourier transform IR analysis, scanning electron microscopy, and Energy-dispersive X-ray spectroscopy. X-ray powder diffraction confirmed the formation of high purity NiO and alpha-Fe2O3 crystal phases. In the case of alpha-Fe2O3, about five times larger average crystallite size was obtained. Fourier transform IR spectra of synthesized materials showed characteristic peaks for NiO and alpha-Fe2O3 nanostructures. To visualize the morphology and the chemical composition of the final products Scanning electron microscopy and Energy-dispersive X-ray spectroscopy were performed. The thermogravimetric analysis was done for a better understanding of the general thermal behavior of precursor compounds. This easy-to-perform and fast preparation method opens a broad range of obtained materials' usage, particularly due to its economic viability.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - One-Pot Combustion Synthesis of Nickel Oxide and Hematite: from Simple Coordination Compounds to High Purity Metal Oxide Nanoparticles
EP  - 490
IS  - 4
SP  - 481
VL  - 52
DO  - 10.2298/SOS2004481J
UR  - conv_899
ER  - 

@article{
author = "Jeremić, Dejan and Anđelković, Ljubica and Milenković, Milica R. and Suljagić, Marija and Sumar Ristović, Maja and Ostojić, Sanja and Nikolić, Aleksandar S. and Vulić, Predrag and Brceski, Ilija and Pavlović, Vladimir",
year = "2020",
abstract = "This work is the first report of a very simple and fast one-pot synthesis of nickel oxide (NiO) and hematite (alpha-Fe2O3) nanoparticles by thermal decomposition of transition metal aqua complexes with camphor sulfonate anions. Obtained nanopowders were characterized by X-ray powder diffraction, Fourier transform IR analysis, scanning electron microscopy, and Energy-dispersive X-ray spectroscopy. X-ray powder diffraction confirmed the formation of high purity NiO and alpha-Fe2O3 crystal phases. In the case of alpha-Fe2O3, about five times larger average crystallite size was obtained. Fourier transform IR spectra of synthesized materials showed characteristic peaks for NiO and alpha-Fe2O3 nanostructures. To visualize the morphology and the chemical composition of the final products Scanning electron microscopy and Energy-dispersive X-ray spectroscopy were performed. The thermogravimetric analysis was done for a better understanding of the general thermal behavior of precursor compounds. This easy-to-perform and fast preparation method opens a broad range of obtained materials' usage, particularly due to its economic viability.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "One-Pot Combustion Synthesis of Nickel Oxide and Hematite: from Simple Coordination Compounds to High Purity Metal Oxide Nanoparticles",
pages = "490-481",
number = "4",
volume = "52",
doi = "10.2298/SOS2004481J",
url = "conv_899"
}

Jeremić, D., Anđelković, L., Milenković, M. R., Suljagić, M., Sumar Ristović, M., Ostojić, S., Nikolić, A. S., Vulić, P., Brceski, I.,& Pavlović, V.. (2020). One-Pot Combustion Synthesis of Nickel Oxide and Hematite: from Simple Coordination Compounds to High Purity Metal Oxide Nanoparticles. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 52(4), 481-490.
https://doi.org/10.2298/SOS2004481J
conv_899

Jeremić D, Anđelković L, Milenković MR, Suljagić M, Sumar Ristović M, Ostojić S, Nikolić AS, Vulić P, Brceski I, Pavlović V. One-Pot Combustion Synthesis of Nickel Oxide and Hematite: from Simple Coordination Compounds to High Purity Metal Oxide Nanoparticles. in Science of Sintering. 2020;52(4):481-490.
doi:10.2298/SOS2004481J
conv_899 .

Jeremić, Dejan, Anđelković, Ljubica, Milenković, Milica R., Suljagić, Marija, Sumar Ristović, Maja, Ostojić, Sanja, Nikolić, Aleksandar S., Vulić, Predrag, Brceski, Ilija, Pavlović, Vladimir, "One-Pot Combustion Synthesis of Nickel Oxide and Hematite: from Simple Coordination Compounds to High Purity Metal Oxide Nanoparticles" in Science of Sintering, 52, no. 4 (2020):481-490,
https://doi.org/10.2298/SOS2004481J .,
conv_899 .

TY  - JOUR
AU  - Mirković, Ilinka
AU  - Nikolić, Marija S.
AU  - Ostojić, Sanja
AU  - Maletaskić, Jelena
AU  - Petrović, Zoran
AU  - Đonlagić, Jasna
PY  - 2020
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/757
AB  - Semi-interpenetrating polymer networks (SIPN) based on thermo-responsive poly(N-isopropylacrylamide) (PNIPA) and water-soluble sodium salts of linear hyaluronic acid (Na-HA) were physically cross-linked with synthetic nanoclay (laponite XLG). PNIPA hydrogels with different cross-linking densities and Na-HA concentrations were synthesized by in situ free-radical redox polymerization. The structure and heterogeneity of the semi-IPN hydrogels were examined by SEM and XRD. The content of clay incorporated in the gel was determined by TGA. DSC measurements showed that volume phase transition temperature and its enthalpy varied with the clay and hyaluronic acid content. SIPN hydrogels containing negatively charged polyelectrolyte, Na-HA, exhibited higher Q(e) and faster deswelling rates than the corresponding PNIPA NC hydrogels. The presence of the anionic Na-HA polymer reduced the storage modulus, indicating a weakening of the hydrogel network structure, especially at lower clay contents. The nanocomposite hydrogels exhibited high tan delta values, which increased with increasing Na-HA content.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Thermo-responsive hydrogels based on poly(N-isopropyl- acrylamide) and hyaluronic acid cross-linked with nanoclays
EP  - 1221
IS  - 9
SP  - 1197
VL  - 85
DO  - 10.2298/JSC200109023M
UR  - conv_881
ER  - 

@article{
author = "Mirković, Ilinka and Nikolić, Marija S. and Ostojić, Sanja and Maletaskić, Jelena and Petrović, Zoran and Đonlagić, Jasna",
year = "2020",
abstract = "Semi-interpenetrating polymer networks (SIPN) based on thermo-responsive poly(N-isopropylacrylamide) (PNIPA) and water-soluble sodium salts of linear hyaluronic acid (Na-HA) were physically cross-linked with synthetic nanoclay (laponite XLG). PNIPA hydrogels with different cross-linking densities and Na-HA concentrations were synthesized by in situ free-radical redox polymerization. The structure and heterogeneity of the semi-IPN hydrogels were examined by SEM and XRD. The content of clay incorporated in the gel was determined by TGA. DSC measurements showed that volume phase transition temperature and its enthalpy varied with the clay and hyaluronic acid content. SIPN hydrogels containing negatively charged polyelectrolyte, Na-HA, exhibited higher Q(e) and faster deswelling rates than the corresponding PNIPA NC hydrogels. The presence of the anionic Na-HA polymer reduced the storage modulus, indicating a weakening of the hydrogel network structure, especially at lower clay contents. The nanocomposite hydrogels exhibited high tan delta values, which increased with increasing Na-HA content.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Thermo-responsive hydrogels based on poly(N-isopropyl- acrylamide) and hyaluronic acid cross-linked with nanoclays",
pages = "1221-1197",
number = "9",
volume = "85",
doi = "10.2298/JSC200109023M",
url = "conv_881"
}

Mirković, I., Nikolić, M. S., Ostojić, S., Maletaskić, J., Petrović, Z.,& Đonlagić, J.. (2020). Thermo-responsive hydrogels based on poly(N-isopropyl- acrylamide) and hyaluronic acid cross-linked with nanoclays. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 85(9), 1197-1221.
https://doi.org/10.2298/JSC200109023M
conv_881

Mirković I, Nikolić MS, Ostojić S, Maletaskić J, Petrović Z, Đonlagić J. Thermo-responsive hydrogels based on poly(N-isopropyl- acrylamide) and hyaluronic acid cross-linked with nanoclays. in Journal of the Serbian Chemical Society. 2020;85(9):1197-1221.
doi:10.2298/JSC200109023M
conv_881 .

Mirković, Ilinka, Nikolić, Marija S., Ostojić, Sanja, Maletaskić, Jelena, Petrović, Zoran, Đonlagić, Jasna, "Thermo-responsive hydrogels based on poly(N-isopropyl- acrylamide) and hyaluronic acid cross-linked with nanoclays" in Journal of the Serbian Chemical Society, 85, no. 9 (2020):1197-1221,
https://doi.org/10.2298/JSC200109023M .,
conv_881 .

TY  - JOUR
AU  - Zlatanović, Snežana
AU  - Ostojić, Sanja
AU  - Micić, Darko
AU  - Rankov, Sofija
AU  - Dodevska, Margarita
AU  - Vukosavljević, Predrag
AU  - Gorjanović, Stanislava
PY  - 2019
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/686
AB  - Using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) thermal characteristics and degradation kinetic parameters of apple pomace flours (APF1-5), obtained by dehydration of apple pomace (originating from single and mixed apple varieties, grown both organically and conventionally) and ground to particle size below of 300 mu m, were determined. Glass transition (T-g) close to common storage temperature (21 degrees C) was ascribed to commercial sample and T-g well above it (28-38 degrees C) to APF1-5. Both values of T-g and low water activity (0.2-0.4) prolong APF shelf-life. The kinetic parameters of the thermal degradation process: activation energy (E) in the range from 83 to118 kJ/mol, logarithmic value of pre-exponential factor (ln(A/min(-)1)) in the range from 20 to 28, and rate constant (k(200)) from 0.143 to 0.278 min(-1) were calculated. APF samples were grouped according to rate constant (k(200)) values of thermal degradation process at baking temperature (200 degrees C). Organic samples were found to have a higher thermal stability.
PB  - Elsevier, Amsterdam
T2  - Thermochimica Acta
T1  - Thermal behaviour and degradation kinetics of apple pomace flours
EP  - 25
SP  - 17
VL  - 673
DO  - 10.1016/j.tca.2019.01.009
UR  - conv_765
ER  - 

@article{
author = "Zlatanović, Snežana and Ostojić, Sanja and Micić, Darko and Rankov, Sofija and Dodevska, Margarita and Vukosavljević, Predrag and Gorjanović, Stanislava",
year = "2019",
abstract = "Using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) thermal characteristics and degradation kinetic parameters of apple pomace flours (APF1-5), obtained by dehydration of apple pomace (originating from single and mixed apple varieties, grown both organically and conventionally) and ground to particle size below of 300 mu m, were determined. Glass transition (T-g) close to common storage temperature (21 degrees C) was ascribed to commercial sample and T-g well above it (28-38 degrees C) to APF1-5. Both values of T-g and low water activity (0.2-0.4) prolong APF shelf-life. The kinetic parameters of the thermal degradation process: activation energy (E) in the range from 83 to118 kJ/mol, logarithmic value of pre-exponential factor (ln(A/min(-)1)) in the range from 20 to 28, and rate constant (k(200)) from 0.143 to 0.278 min(-1) were calculated. APF samples were grouped according to rate constant (k(200)) values of thermal degradation process at baking temperature (200 degrees C). Organic samples were found to have a higher thermal stability.",
publisher = "Elsevier, Amsterdam",
journal = "Thermochimica Acta",
title = "Thermal behaviour and degradation kinetics of apple pomace flours",
pages = "25-17",
volume = "673",
doi = "10.1016/j.tca.2019.01.009",
url = "conv_765"
}

Zlatanović, S., Ostojić, S., Micić, D., Rankov, S., Dodevska, M., Vukosavljević, P.,& Gorjanović, S.. (2019). Thermal behaviour and degradation kinetics of apple pomace flours. in Thermochimica Acta
Elsevier, Amsterdam., 673, 17-25.
https://doi.org/10.1016/j.tca.2019.01.009
conv_765

Zlatanović S, Ostojić S, Micić D, Rankov S, Dodevska M, Vukosavljević P, Gorjanović S. Thermal behaviour and degradation kinetics of apple pomace flours. in Thermochimica Acta. 2019;673:17-25.
doi:10.1016/j.tca.2019.01.009
conv_765 .

Zlatanović, Snežana, Ostojić, Sanja, Micić, Darko, Rankov, Sofija, Dodevska, Margarita, Vukosavljević, Predrag, Gorjanović, Stanislava, "Thermal behaviour and degradation kinetics of apple pomace flours" in Thermochimica Acta, 673 (2019):17-25,
https://doi.org/10.1016/j.tca.2019.01.009 .,
conv_765 .

TY  - JOUR
AU  - Micić, Darko
AU  - Ostojić, Sanja
AU  - Pezo, Lato
AU  - Blagojević, Stevan
AU  - Pavlić, Branimir
AU  - Zeković, Zoran
AU  - Đurović, Saša
PY  - 2019
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/672
AB  - Essential oils (EOs) are aromatic oily liquids prepared from plant material. Many plants are rich in EOs, which usually consisted of different secondary metabolites such as terpenoids. The EOs or their components have been shown to exhibit antioxidant, antimicrobial, antiviral, antimycotic, antitoxigenic, antiparasitic and insecticidal properties, which is main reason for their ivenstigation. Coriander and sage essential oils, isolated by hydrodistillation, were analyzed using gas chromatography, differential scanning calorimetry and thermogravimetry techniques in order to correlate chemical composition and thermal behavior. Results showed that evaporation process of sage EO takes place in two steps, while coriander EO was evaporated in one step. The activation energy of the evaporation process of both EOs was in accordance to the evaporation enthalpy of dominant compounds in analyzed samples. The quantitative structure-retention relationship (QSRR) was employed to predict the retention time (RT) of essential oil compounds obtained by GC analysis, using five molecular descriptors selected by genetic algorithm. The selected descriptors were used as inputs of an artificial neural network (ANN), to build an RT predictive QSRR model. The coefficient of determination was 0.969, indicating that this model could be used for prediction of RT values for coriander and sage essential oil compounds.
T2  - Industrial Crops and Products
T1  - Essential oils of coriander and sage: Investigation of chemical profile, thermal properties and QSRR analysis
VL  - 138
DO  - 10.1016/j.indcrop.2019.06.001
UR  - conv_795
ER  - 

@article{
author = "Micić, Darko and Ostojić, Sanja and Pezo, Lato and Blagojević, Stevan and Pavlić, Branimir and Zeković, Zoran and Đurović, Saša",
year = "2019",
abstract = "Essential oils (EOs) are aromatic oily liquids prepared from plant material. Many plants are rich in EOs, which usually consisted of different secondary metabolites such as terpenoids. The EOs or their components have been shown to exhibit antioxidant, antimicrobial, antiviral, antimycotic, antitoxigenic, antiparasitic and insecticidal properties, which is main reason for their ivenstigation. Coriander and sage essential oils, isolated by hydrodistillation, were analyzed using gas chromatography, differential scanning calorimetry and thermogravimetry techniques in order to correlate chemical composition and thermal behavior. Results showed that evaporation process of sage EO takes place in two steps, while coriander EO was evaporated in one step. The activation energy of the evaporation process of both EOs was in accordance to the evaporation enthalpy of dominant compounds in analyzed samples. The quantitative structure-retention relationship (QSRR) was employed to predict the retention time (RT) of essential oil compounds obtained by GC analysis, using five molecular descriptors selected by genetic algorithm. The selected descriptors were used as inputs of an artificial neural network (ANN), to build an RT predictive QSRR model. The coefficient of determination was 0.969, indicating that this model could be used for prediction of RT values for coriander and sage essential oil compounds.",
journal = "Industrial Crops and Products",
title = "Essential oils of coriander and sage: Investigation of chemical profile, thermal properties and QSRR analysis",
volume = "138",
doi = "10.1016/j.indcrop.2019.06.001",
url = "conv_795"
}

Micić, D., Ostojić, S., Pezo, L., Blagojević, S., Pavlić, B., Zeković, Z.,& Đurović, S.. (2019). Essential oils of coriander and sage: Investigation of chemical profile, thermal properties and QSRR analysis. in Industrial Crops and Products, 138.
https://doi.org/10.1016/j.indcrop.2019.06.001
conv_795

Micić D, Ostojić S, Pezo L, Blagojević S, Pavlić B, Zeković Z, Đurović S. Essential oils of coriander and sage: Investigation of chemical profile, thermal properties and QSRR analysis. in Industrial Crops and Products. 2019;138.
doi:10.1016/j.indcrop.2019.06.001
conv_795 .

Micić, Darko, Ostojić, Sanja, Pezo, Lato, Blagojević, Stevan, Pavlić, Branimir, Zeković, Zoran, Đurović, Saša, "Essential oils of coriander and sage: Investigation of chemical profile, thermal properties and QSRR analysis" in Industrial Crops and Products, 138 (2019),
https://doi.org/10.1016/j.indcrop.2019.06.001 .,
conv_795 .

TY  - JOUR
AU  - Simonović, Mladen
AU  - Simonović, Branislav R.
AU  - Ostojić, Sanja
AU  - Pezo, Lato
AU  - Micić, Darko
AU  - Stanisavljević, Nemanja
AU  - Pejin, Boris
PY  - 2019
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/667
AB  - This study aimed to estimate the quality (in terms of standard chemical parameters, total antioxidative activity /AO/ and thermal properties) of the fresh strawberry (Fragaria xananassa L. Duch.), raspberry (Rubus idaeus L.) and blackberry (Rubus fruticosusL.) samples grown in the Western Serbia. The examined blackberry variety was found to exhibit the most potent AO (DPPH /2,2-diphenyl-1-picrylhydrazyl/ assay, EC50 4.05 +/- 0.22 mu g and ARP 0.25 +/- 0.03 mu g(-1); Hydroxo-Perhydroxyl Mercury(II) Complex /HPMC/ assay, 0.072 +/- 0.007%/mu L), due to the enriched contents of both total phenolics and anthocyanins. It was actually followed by the raspberry and strawberry samples. Unlike the aforementioned trend for AO, thermal behaviour of all samples was similar. This is first time ever that a DC polarographic HPMC assay has been applied for the characterisation of the fresh berry fruits. Further studies aiming to screen total AO of the soft fruit during growth, storage and processing might be well facilitated by the application of this low cost, rapid, easy-to-handle and reliable electrochemical assay.
PB  - Elsevier, Amsterdam
T2  - Scientia Horticulturae
T1  - A contribution to the estimation of berry fruits quality
VL  - 258
DO  - 10.1016/j.scienta.2019.108776
UR  - conv_801
ER  - 

@article{
author = "Simonović, Mladen and Simonović, Branislav R. and Ostojić, Sanja and Pezo, Lato and Micić, Darko and Stanisavljević, Nemanja and Pejin, Boris",
year = "2019",
abstract = "This study aimed to estimate the quality (in terms of standard chemical parameters, total antioxidative activity /AO/ and thermal properties) of the fresh strawberry (Fragaria xananassa L. Duch.), raspberry (Rubus idaeus L.) and blackberry (Rubus fruticosusL.) samples grown in the Western Serbia. The examined blackberry variety was found to exhibit the most potent AO (DPPH /2,2-diphenyl-1-picrylhydrazyl/ assay, EC50 4.05 +/- 0.22 mu g and ARP 0.25 +/- 0.03 mu g(-1); Hydroxo-Perhydroxyl Mercury(II) Complex /HPMC/ assay, 0.072 +/- 0.007%/mu L), due to the enriched contents of both total phenolics and anthocyanins. It was actually followed by the raspberry and strawberry samples. Unlike the aforementioned trend for AO, thermal behaviour of all samples was similar. This is first time ever that a DC polarographic HPMC assay has been applied for the characterisation of the fresh berry fruits. Further studies aiming to screen total AO of the soft fruit during growth, storage and processing might be well facilitated by the application of this low cost, rapid, easy-to-handle and reliable electrochemical assay.",
publisher = "Elsevier, Amsterdam",
journal = "Scientia Horticulturae",
title = "A contribution to the estimation of berry fruits quality",
volume = "258",
doi = "10.1016/j.scienta.2019.108776",
url = "conv_801"
}

Simonović, M., Simonović, B. R., Ostojić, S., Pezo, L., Micić, D., Stanisavljević, N.,& Pejin, B.. (2019). A contribution to the estimation of berry fruits quality. in Scientia Horticulturae
Elsevier, Amsterdam., 258.
https://doi.org/10.1016/j.scienta.2019.108776
conv_801

Simonović M, Simonović BR, Ostojić S, Pezo L, Micić D, Stanisavljević N, Pejin B. A contribution to the estimation of berry fruits quality. in Scientia Horticulturae. 2019;258.
doi:10.1016/j.scienta.2019.108776
conv_801 .

Simonović, Mladen, Simonović, Branislav R., Ostojić, Sanja, Pezo, Lato, Micić, Darko, Stanisavljević, Nemanja, Pejin, Boris, "A contribution to the estimation of berry fruits quality" in Scientia Horticulturae, 258 (2019),
https://doi.org/10.1016/j.scienta.2019.108776 .,
conv_801 .

TY  - JOUR
AU  - Simonović, Mladen
AU  - Ostojić, Sanja
AU  - Micić, Darko
AU  - Pesaković, Marijana
AU  - Pejin, Boris
PY  - 2019
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/649
AB  - This study aimed to produce low-energy strawberries of the Joly cultivar by breeding them under different growing conditions. The efficacy of such a process was screened by the means of common physico-chemical parameters underpinned with the findings of elementary chemical analysis. The preferred strawberry breed line (treated with microbiological fertiliser of choice) showed both a decreased energy value (130 +/- 6 kJ/100 g or 31.07 kcal) and an increased water content (91.0 +/- 7.3 g/100 g). Due to a rich content of phenolic compounds (Total Phenolic Content/TPC/4184 +/- 39 mg GAE/kg; Total Anthocyanin Content/TAC/394 +/- 4 mg C3GE/kg), it also exhibited potent antioxidant activity (0.110 +/- 0.008 %/mu L, HPMC /Hydroxo-Perhydroxyl Mercury(II) Complex/) assay; EC50 = 2.01 +/- 0.10 mu g and ARP = 0.50 +/- 0.05 mu g(-1), DPPH assay). Finally, the polyphenolic extract of the same breed line showed high anti-alpha, glucosidase activity (IC50 = 19 +/- 1 mu g/mL), being more than four-fold active compared to acarbose (IC50 = 78 +/- 4 mu g/mL), the anti-diabetic drug used as a positive control. Taken all together, the utilisation of microbiological fertiliser (Bacillus sp.) in tunnels might be recommended for the breeding of low-energy strawberries of the Joly cultivar (the starting point for developing of novel functional foods targeting the obese population) in the same or similar agricultural conditions, if further studies confirm its likely potential and credibility.
PB  - MDPI AG
T2  - Applied Sciences-Basel
T1  - Low-Energy Strawberry Fruits of Joly Cultivar, the First Step Towards a Novel, Food-Based Solution for the Obese Population
IS  - 23
VL  - 9
DO  - 10.3390/app9235140
UR  - conv_825
ER  - 

@article{
author = "Simonović, Mladen and Ostojić, Sanja and Micić, Darko and Pesaković, Marijana and Pejin, Boris",
year = "2019",
abstract = "This study aimed to produce low-energy strawberries of the Joly cultivar by breeding them under different growing conditions. The efficacy of such a process was screened by the means of common physico-chemical parameters underpinned with the findings of elementary chemical analysis. The preferred strawberry breed line (treated with microbiological fertiliser of choice) showed both a decreased energy value (130 +/- 6 kJ/100 g or 31.07 kcal) and an increased water content (91.0 +/- 7.3 g/100 g). Due to a rich content of phenolic compounds (Total Phenolic Content/TPC/4184 +/- 39 mg GAE/kg; Total Anthocyanin Content/TAC/394 +/- 4 mg C3GE/kg), it also exhibited potent antioxidant activity (0.110 +/- 0.008 %/mu L, HPMC /Hydroxo-Perhydroxyl Mercury(II) Complex/) assay; EC50 = 2.01 +/- 0.10 mu g and ARP = 0.50 +/- 0.05 mu g(-1), DPPH assay). Finally, the polyphenolic extract of the same breed line showed high anti-alpha, glucosidase activity (IC50 = 19 +/- 1 mu g/mL), being more than four-fold active compared to acarbose (IC50 = 78 +/- 4 mu g/mL), the anti-diabetic drug used as a positive control. Taken all together, the utilisation of microbiological fertiliser (Bacillus sp.) in tunnels might be recommended for the breeding of low-energy strawberries of the Joly cultivar (the starting point for developing of novel functional foods targeting the obese population) in the same or similar agricultural conditions, if further studies confirm its likely potential and credibility.",
publisher = "MDPI AG",
journal = "Applied Sciences-Basel",
title = "Low-Energy Strawberry Fruits of Joly Cultivar, the First Step Towards a Novel, Food-Based Solution for the Obese Population",
number = "23",
volume = "9",
doi = "10.3390/app9235140",
url = "conv_825"
}

Simonović, M., Ostojić, S., Micić, D., Pesaković, M.,& Pejin, B.. (2019). Low-Energy Strawberry Fruits of Joly Cultivar, the First Step Towards a Novel, Food-Based Solution for the Obese Population. in Applied Sciences-Basel
MDPI AG., 9(23).
https://doi.org/10.3390/app9235140
conv_825

Simonović M, Ostojić S, Micić D, Pesaković M, Pejin B. Low-Energy Strawberry Fruits of Joly Cultivar, the First Step Towards a Novel, Food-Based Solution for the Obese Population. in Applied Sciences-Basel. 2019;9(23).
doi:10.3390/app9235140
conv_825 .

Simonović, Mladen, Ostojić, Sanja, Micić, Darko, Pesaković, Marijana, Pejin, Boris, "Low-Energy Strawberry Fruits of Joly Cultivar, the First Step Towards a Novel, Food-Based Solution for the Obese Population" in Applied Sciences-Basel, 9, no. 23 (2019),
https://doi.org/10.3390/app9235140 .,
conv_825 .

TY  - JOUR
AU  - Zlatanović, Snežana
AU  - Kalusević, Ana
AU  - Micić, Darko
AU  - Lalicić-Petronijević, Jovanka
AU  - Tomić, Nikola
AU  - Ostojić, Sanja
AU  - Gorjanović, Stanislava
PY  - 2019
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/645
AB  - Apple pomace flour (APF) with high content of dietary fibers (DF), total polyphenolics (TPCs) and flavonoids (TFCs) was produced at the industrial scale. Bulk and tapped density, swelling, water and oil holding capacity, solubility and hydration density of fine and coarse APF with average particle size 0.16 and 0.50 mm were compared. The effect of wheat flour substitution with 25%, 50% and 75% of fine and coarse APF was studied upon cookies production at the industrial scale and after one year of storage. Coarse APF performed better in respect to sensorial properties, content and retention of dietary compounds and antioxidant (AO) activity. The cookies with optimal share of coarse APF (50%) contained 21 g/100 g of DF and several times higher TPC, TFC as well as AO activity than control cookies, retained well health promoting compounds and maintained an intensely fruity aroma and crispy texture. They were acceptable for consumers according to the hedonic test.
PB  - MDPI AG
T2  - Foods
T1  - Functionality and Storability of Cookies Fortified at the Industrial Scale with up to 75% of Apple Pomace Flour Produced by Dehydration
IS  - 11
VL  - 8
DO  - 10.3390/foods8110561
UR  - conv_818
ER  - 

@article{
author = "Zlatanović, Snežana and Kalusević, Ana and Micić, Darko and Lalicić-Petronijević, Jovanka and Tomić, Nikola and Ostojić, Sanja and Gorjanović, Stanislava",
year = "2019",
abstract = "Apple pomace flour (APF) with high content of dietary fibers (DF), total polyphenolics (TPCs) and flavonoids (TFCs) was produced at the industrial scale. Bulk and tapped density, swelling, water and oil holding capacity, solubility and hydration density of fine and coarse APF with average particle size 0.16 and 0.50 mm were compared. The effect of wheat flour substitution with 25%, 50% and 75% of fine and coarse APF was studied upon cookies production at the industrial scale and after one year of storage. Coarse APF performed better in respect to sensorial properties, content and retention of dietary compounds and antioxidant (AO) activity. The cookies with optimal share of coarse APF (50%) contained 21 g/100 g of DF and several times higher TPC, TFC as well as AO activity than control cookies, retained well health promoting compounds and maintained an intensely fruity aroma and crispy texture. They were acceptable for consumers according to the hedonic test.",
publisher = "MDPI AG",
journal = "Foods",
title = "Functionality and Storability of Cookies Fortified at the Industrial Scale with up to 75% of Apple Pomace Flour Produced by Dehydration",
number = "11",
volume = "8",
doi = "10.3390/foods8110561",
url = "conv_818"
}

Zlatanović, S., Kalusević, A., Micić, D., Lalicić-Petronijević, J., Tomić, N., Ostojić, S.,& Gorjanović, S.. (2019). Functionality and Storability of Cookies Fortified at the Industrial Scale with up to 75% of Apple Pomace Flour Produced by Dehydration. in Foods
MDPI AG., 8(11).
https://doi.org/10.3390/foods8110561
conv_818

Zlatanović S, Kalusević A, Micić D, Lalicić-Petronijević J, Tomić N, Ostojić S, Gorjanović S. Functionality and Storability of Cookies Fortified at the Industrial Scale with up to 75% of Apple Pomace Flour Produced by Dehydration. in Foods. 2019;8(11).
doi:10.3390/foods8110561
conv_818 .

Zlatanović, Snežana, Kalusević, Ana, Micić, Darko, Lalicić-Petronijević, Jovanka, Tomić, Nikola, Ostojić, Sanja, Gorjanović, Stanislava, "Functionality and Storability of Cookies Fortified at the Industrial Scale with up to 75% of Apple Pomace Flour Produced by Dehydration" in Foods, 8, no. 11 (2019),
https://doi.org/10.3390/foods8110561 .,
conv_818 .

TY  - JOUR
AU  - Stefanović, Ivan S.
AU  - Dostanić, Jasmina
AU  - Lončarević, Davor
AU  - Vasiljević-Radović, Dana
AU  - Ostojić, Sanja
AU  - Marković, Smilja
AU  - Pergal, Marija, V
PY  - 2019
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/638
AB  - This work is focused on preparation of poly(urethane-siloxane)/titanium-dioxide nanocomposites (PUSNs) with enhanced features. PUSNs were prepared by the in situ polymerization reaction using titanium-dioxide as a nano-filler in different amounts (1, 2, 3 and 5 wt.%) with respect to the poly(urethane-siloxane) (PUS) matrix. PUS copolymer was based on alpha,omega-dihydroxy-ethoxypropyl-poly(dimethylsiloxane), 4,4'-methylenediphenyldiisocyanate and 1,4-butanediole. In order to investigate the influence of TiO2 content on the structure, UV resistance, thermal properties, hydrophobicity and morphology of the prepared PUSNs, FTIR spectroscopy, UV-Vis diffuse-reflectance spectroscopy, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), contact angle measurements, surface free energy (SFE) analysis, water absorption, scanning electron microscopy (SEM) and atomic force microscopy (AFM) were performed. The PUSNs showed excellent UV resistance, high hydrophobicity, low surface free energy and also higher thermal stability and rougher surface and cross-section relief structure as compared to the pure PUS copolymer. Based on the obtained results it can be concluded that prepared PUSNs could be potentially used as protective coatings.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Preparation and characterization of poly(urethane-siloxane)/titanium-dioxide nanocomposites
EP  - 24
IS  - 1
SP  - 13
VL  - 73
DO  - 10.2298/HEMIND180530002S
UR  - conv_334
ER  - 

@article{
author = "Stefanović, Ivan S. and Dostanić, Jasmina and Lončarević, Davor and Vasiljević-Radović, Dana and Ostojić, Sanja and Marković, Smilja and Pergal, Marija, V",
year = "2019",
abstract = "This work is focused on preparation of poly(urethane-siloxane)/titanium-dioxide nanocomposites (PUSNs) with enhanced features. PUSNs were prepared by the in situ polymerization reaction using titanium-dioxide as a nano-filler in different amounts (1, 2, 3 and 5 wt.%) with respect to the poly(urethane-siloxane) (PUS) matrix. PUS copolymer was based on alpha,omega-dihydroxy-ethoxypropyl-poly(dimethylsiloxane), 4,4'-methylenediphenyldiisocyanate and 1,4-butanediole. In order to investigate the influence of TiO2 content on the structure, UV resistance, thermal properties, hydrophobicity and morphology of the prepared PUSNs, FTIR spectroscopy, UV-Vis diffuse-reflectance spectroscopy, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), contact angle measurements, surface free energy (SFE) analysis, water absorption, scanning electron microscopy (SEM) and atomic force microscopy (AFM) were performed. The PUSNs showed excellent UV resistance, high hydrophobicity, low surface free energy and also higher thermal stability and rougher surface and cross-section relief structure as compared to the pure PUS copolymer. Based on the obtained results it can be concluded that prepared PUSNs could be potentially used as protective coatings.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Preparation and characterization of poly(urethane-siloxane)/titanium-dioxide nanocomposites",
pages = "24-13",
number = "1",
volume = "73",
doi = "10.2298/HEMIND180530002S",
url = "conv_334"
}

Stefanović, I. S., Dostanić, J., Lončarević, D., Vasiljević-Radović, D., Ostojić, S., Marković, S.,& Pergal, M. V.. (2019). Preparation and characterization of poly(urethane-siloxane)/titanium-dioxide nanocomposites. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 73(1), 13-24.
https://doi.org/10.2298/HEMIND180530002S
conv_334

Stefanović IS, Dostanić J, Lončarević D, Vasiljević-Radović D, Ostojić S, Marković S, Pergal MV. Preparation and characterization of poly(urethane-siloxane)/titanium-dioxide nanocomposites. in Hemijska industrija. 2019;73(1):13-24.
doi:10.2298/HEMIND180530002S
conv_334 .

Stefanović, Ivan S., Dostanić, Jasmina, Lončarević, Davor, Vasiljević-Radović, Dana, Ostojić, Sanja, Marković, Smilja, Pergal, Marija, V, "Preparation and characterization of poly(urethane-siloxane)/titanium-dioxide nanocomposites" in Hemijska industrija, 73, no. 1 (2019):13-24,
https://doi.org/10.2298/HEMIND180530002S .,
conv_334 .

TY  - JOUR
AU  - Kojić, Dejan
AU  - Lazić, Nada
AU  - Budinski-Simendić, Jaroslava
AU  - Spirkova, Milena
AU  - Dugić, Pero
AU  - Ostojić, Sanja
AU  - Pavlicević, Jelena
PY  - 2018
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/610
AB  - Reinforcing of elastomers by the addition of various nanofillers has led to significant improvements in elastomer properties, and therefore, to the increase of potentials for use as suitable materials for special applications. The aim of this study was to investigate the effects of combinations of two active fillers (carbon black and synthesized silica (50/0; 35/15; 25/25; 15/35; 0/50; phr)) on the morphology, curing, as well as thermal, dynamic-mechanical and mechanical properties of nanocomposites based on the styrene-butadiene rubber as the network precursor. Based on SEM results, the largest agglomerates were observed in the structure of the nanocomposite containing 25 phr of carbon black and 25 phr of SiO2. Determination of curing characteristics indicated that the minimum torque at 100, 150 and 160 degrees C had higher magnitudes for the compounds with silica filler, which is in accordance with the tendency of SiO2 to form filler-filler interactions. Values of the scorch time and the optimal time of crosslinking increased by increasing the silica phr content in the fillers mixture. It could be thus supposed that the fraction of occluded and trapped chains in the structure of elastomer reinforced by SiO2 is higher due to the almost 2-fold higher value of the silica NDBP number as compared to the N-DBP number of carbon black particles. On the basis of MDSC results, it was assessed that the addition of combined active fillers had negligible effects on the glass transition temperature, registered at about -47 degrees C for all tested samples. The obtained DMA data, concerning storage moduli in the temperature range from -20 to 0 degrees C, (characteristic for "Payne" effect) are very significant for predictions of the properties of the tyre tread such as the slip resistance on the road on ice and in the wet conditions. The increase of silica content in the combined filler induced a decrease of the dynamic mechanical loss factor of prepared nanocomposites in the temperature range from 40 to 80 degrees C. The obtained results are very important for the structuring of elastomeric materials aimed for production of tyres with reduced rolling resistance and fuel consumption. The elastomer containing the highest content of carbon black showed the highest value of the tensile strength (21.8 MPa). The abrasion resistance of the synthesized nanocomposites increased as the silica content was reduced in the combined fillers.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - The influence of combined active fillers on the properties of elastomeric materials for eco-friendly tyres
EP  - 303
IS  - 5
SP  - 293
VL  - 72
DO  - 10.2298/HEMIND180227021K
UR  - conv_749
ER  - 

@article{
author = "Kojić, Dejan and Lazić, Nada and Budinski-Simendić, Jaroslava and Spirkova, Milena and Dugić, Pero and Ostojić, Sanja and Pavlicević, Jelena",
year = "2018",
abstract = "Reinforcing of elastomers by the addition of various nanofillers has led to significant improvements in elastomer properties, and therefore, to the increase of potentials for use as suitable materials for special applications. The aim of this study was to investigate the effects of combinations of two active fillers (carbon black and synthesized silica (50/0; 35/15; 25/25; 15/35; 0/50; phr)) on the morphology, curing, as well as thermal, dynamic-mechanical and mechanical properties of nanocomposites based on the styrene-butadiene rubber as the network precursor. Based on SEM results, the largest agglomerates were observed in the structure of the nanocomposite containing 25 phr of carbon black and 25 phr of SiO2. Determination of curing characteristics indicated that the minimum torque at 100, 150 and 160 degrees C had higher magnitudes for the compounds with silica filler, which is in accordance with the tendency of SiO2 to form filler-filler interactions. Values of the scorch time and the optimal time of crosslinking increased by increasing the silica phr content in the fillers mixture. It could be thus supposed that the fraction of occluded and trapped chains in the structure of elastomer reinforced by SiO2 is higher due to the almost 2-fold higher value of the silica NDBP number as compared to the N-DBP number of carbon black particles. On the basis of MDSC results, it was assessed that the addition of combined active fillers had negligible effects on the glass transition temperature, registered at about -47 degrees C for all tested samples. The obtained DMA data, concerning storage moduli in the temperature range from -20 to 0 degrees C, (characteristic for "Payne" effect) are very significant for predictions of the properties of the tyre tread such as the slip resistance on the road on ice and in the wet conditions. The increase of silica content in the combined filler induced a decrease of the dynamic mechanical loss factor of prepared nanocomposites in the temperature range from 40 to 80 degrees C. The obtained results are very important for the structuring of elastomeric materials aimed for production of tyres with reduced rolling resistance and fuel consumption. The elastomer containing the highest content of carbon black showed the highest value of the tensile strength (21.8 MPa). The abrasion resistance of the synthesized nanocomposites increased as the silica content was reduced in the combined fillers.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "The influence of combined active fillers on the properties of elastomeric materials for eco-friendly tyres",
pages = "303-293",
number = "5",
volume = "72",
doi = "10.2298/HEMIND180227021K",
url = "conv_749"
}

Kojić, D., Lazić, N., Budinski-Simendić, J., Spirkova, M., Dugić, P., Ostojić, S.,& Pavlicević, J.. (2018). The influence of combined active fillers on the properties of elastomeric materials for eco-friendly tyres. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 72(5), 293-303.
https://doi.org/10.2298/HEMIND180227021K
conv_749

Kojić D, Lazić N, Budinski-Simendić J, Spirkova M, Dugić P, Ostojić S, Pavlicević J. The influence of combined active fillers on the properties of elastomeric materials for eco-friendly tyres. in Hemijska industrija. 2018;72(5):293-303.
doi:10.2298/HEMIND180227021K
conv_749 .

Kojić, Dejan, Lazić, Nada, Budinski-Simendić, Jaroslava, Spirkova, Milena, Dugić, Pero, Ostojić, Sanja, Pavlicević, Jelena, "The influence of combined active fillers on the properties of elastomeric materials for eco-friendly tyres" in Hemijska industrija, 72, no. 5 (2018):293-303,
https://doi.org/10.2298/HEMIND180227021K .,
conv_749 .

TY  - JOUR
AU  - Nešić, Aleksandra
AU  - Ruzić, Jovana
AU  - Gordić, Milan
AU  - Ostojić, Sanja
AU  - Micić, Darko
AU  - Onjia, Antonije
PY  - 2017
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/525
AB  - In this work, the new biodegradable blend films composed of natural polymer pectin and synthetic polymer polyvinylpyrrolidone were obtained through casting process. The concentration of glycerol in all formulations was constant (2% v/v), while the amount of polyvinylpyrrolidone varied from 20 to 60% by mass of pectin. The molecular interactions between two components were elucidated by FTIR-ATR spectroscopy, while functional properties of these films were carried out by determination of puncture resistance, tensile strength, thermal stability, water vapor barrier, wettability and printability. The blending of pectin with PVP led to an improvement of mechanical resistance, barrier properties and hydrophobicity of these films for 57%, 58 and 24%, respectively, remaining adequate thermal stability. Since pectin and PVP are nontoxic, food-grade and biodegradable materials, this research present an ecosustainable approach to provide films with satisfied physical properties for use as packaging material of non-food products, such as water-treatment products (detergents, biocides, agrochemical compounds).
T2  - Composites Part B-Engineering
T1  - Pectin-polyvinylpyrrolidone films: A sustainable approach to the development of biobased packaging materials
EP  - 61
SP  - 56
VL  - 110
DO  - 10.1016/j.compositesb.2016.11.016
UR  - conv_330
ER  - 

@article{
author = "Nešić, Aleksandra and Ruzić, Jovana and Gordić, Milan and Ostojić, Sanja and Micić, Darko and Onjia, Antonije",
year = "2017",
abstract = "In this work, the new biodegradable blend films composed of natural polymer pectin and synthetic polymer polyvinylpyrrolidone were obtained through casting process. The concentration of glycerol in all formulations was constant (2% v/v), while the amount of polyvinylpyrrolidone varied from 20 to 60% by mass of pectin. The molecular interactions between two components were elucidated by FTIR-ATR spectroscopy, while functional properties of these films were carried out by determination of puncture resistance, tensile strength, thermal stability, water vapor barrier, wettability and printability. The blending of pectin with PVP led to an improvement of mechanical resistance, barrier properties and hydrophobicity of these films for 57%, 58 and 24%, respectively, remaining adequate thermal stability. Since pectin and PVP are nontoxic, food-grade and biodegradable materials, this research present an ecosustainable approach to provide films with satisfied physical properties for use as packaging material of non-food products, such as water-treatment products (detergents, biocides, agrochemical compounds).",
journal = "Composites Part B-Engineering",
title = "Pectin-polyvinylpyrrolidone films: A sustainable approach to the development of biobased packaging materials",
pages = "61-56",
volume = "110",
doi = "10.1016/j.compositesb.2016.11.016",
url = "conv_330"
}

Nešić, A., Ruzić, J., Gordić, M., Ostojić, S., Micić, D.,& Onjia, A.. (2017). Pectin-polyvinylpyrrolidone films: A sustainable approach to the development of biobased packaging materials. in Composites Part B-Engineering, 110, 56-61.
https://doi.org/10.1016/j.compositesb.2016.11.016
conv_330

Nešić A, Ruzić J, Gordić M, Ostojić S, Micić D, Onjia A. Pectin-polyvinylpyrrolidone films: A sustainable approach to the development of biobased packaging materials. in Composites Part B-Engineering. 2017;110:56-61.
doi:10.1016/j.compositesb.2016.11.016
conv_330 .

Nešić, Aleksandra, Ruzić, Jovana, Gordić, Milan, Ostojić, Sanja, Micić, Darko, Onjia, Antonije, "Pectin-polyvinylpyrrolidone films: A sustainable approach to the development of biobased packaging materials" in Composites Part B-Engineering, 110 (2017):56-61,
https://doi.org/10.1016/j.compositesb.2016.11.016 .,
conv_330 .

TY  - JOUR
AU  - Pergal, Marija V.
AU  - Stefanović, Ivan S.
AU  - Poreba, Rafal
AU  - Steinhart, Miloš
AU  - Jovančić, Petar
AU  - Ostojić, Sanja
AU  - Spirkova, Milena
PY  - 2017
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/536
AB  - Novel poly(dimethylsiloxane)-based polyurethane nanocomposites (TPU-NCs) were synthesized using in situ polymerization with the nanoclay Cloisite 30B. Differential scanning calorimetry, thermogravimetric analysis, and dynamic mechanical thermal analysis showed that TPU-NCs with an organoclay content of  LT = 5 wt % exhibited increased thermal stability, storage modulus, and hard-segment melt temperatures but decreased degrees of crystallinity. TPU-NCs displayed increased surface hydrophilicity and enhanced surface free energy with increasing organoclay content. Small and wide-angle X-ray scattering confirmed intercalated formations of organoclays in the nanocomposites. Individual clay particles on the surfaces of TPUs with lower organoclay loadings (1 or 3 wt %) or organoclay agglomerates in TPUs with higher amounts of organoclay (>= 5 wt %) were detectable using scanning electron microscopy. The relatively smooth and homogeneous character of pure TPU and the distinctly heterogeneous and rough surfaces of TPU-NCs were detected via atomic force microscopy. Among the nanomaterials prepared, TPU-NCs with 1 wt % organoclay provided the best balance between the organoclay concentration and the functional properties desired in biomedical applications.
PB  - American Chemical Society (ACS)
T2  - Industrial & Engineering Chemistry Research
T1  - Influence of the Organoclay Content on the Structure, Morphology, and Surface Related Properties of Novel Poly(dimethylsiloxane)-Based Polyurethane/Organoclay Nanocomposites
EP  - 4983
IS  - 17
SP  - 4970
VL  - 56
DO  - 10.1021/acs.iecr.6b04913
UR  - conv_658
ER  - 

@article{
author = "Pergal, Marija V. and Stefanović, Ivan S. and Poreba, Rafal and Steinhart, Miloš and Jovančić, Petar and Ostojić, Sanja and Spirkova, Milena",
year = "2017",
abstract = "Novel poly(dimethylsiloxane)-based polyurethane nanocomposites (TPU-NCs) were synthesized using in situ polymerization with the nanoclay Cloisite 30B. Differential scanning calorimetry, thermogravimetric analysis, and dynamic mechanical thermal analysis showed that TPU-NCs with an organoclay content of  LT = 5 wt % exhibited increased thermal stability, storage modulus, and hard-segment melt temperatures but decreased degrees of crystallinity. TPU-NCs displayed increased surface hydrophilicity and enhanced surface free energy with increasing organoclay content. Small and wide-angle X-ray scattering confirmed intercalated formations of organoclays in the nanocomposites. Individual clay particles on the surfaces of TPUs with lower organoclay loadings (1 or 3 wt %) or organoclay agglomerates in TPUs with higher amounts of organoclay (>= 5 wt %) were detectable using scanning electron microscopy. The relatively smooth and homogeneous character of pure TPU and the distinctly heterogeneous and rough surfaces of TPU-NCs were detected via atomic force microscopy. Among the nanomaterials prepared, TPU-NCs with 1 wt % organoclay provided the best balance between the organoclay concentration and the functional properties desired in biomedical applications.",
publisher = "American Chemical Society (ACS)",
journal = "Industrial & Engineering Chemistry Research",
title = "Influence of the Organoclay Content on the Structure, Morphology, and Surface Related Properties of Novel Poly(dimethylsiloxane)-Based Polyurethane/Organoclay Nanocomposites",
pages = "4983-4970",
number = "17",
volume = "56",
doi = "10.1021/acs.iecr.6b04913",
url = "conv_658"
}

Pergal, M. V., Stefanović, I. S., Poreba, R., Steinhart, M., Jovančić, P., Ostojić, S.,& Spirkova, M.. (2017). Influence of the Organoclay Content on the Structure, Morphology, and Surface Related Properties of Novel Poly(dimethylsiloxane)-Based Polyurethane/Organoclay Nanocomposites. in Industrial & Engineering Chemistry Research
American Chemical Society (ACS)., 56(17), 4970-4983.
https://doi.org/10.1021/acs.iecr.6b04913
conv_658

Pergal MV, Stefanović IS, Poreba R, Steinhart M, Jovančić P, Ostojić S, Spirkova M. Influence of the Organoclay Content on the Structure, Morphology, and Surface Related Properties of Novel Poly(dimethylsiloxane)-Based Polyurethane/Organoclay Nanocomposites. in Industrial & Engineering Chemistry Research. 2017;56(17):4970-4983.
doi:10.1021/acs.iecr.6b04913
conv_658 .

Pergal, Marija V., Stefanović, Ivan S., Poreba, Rafal, Steinhart, Miloš, Jovančić, Petar, Ostojić, Sanja, Spirkova, Milena, "Influence of the Organoclay Content on the Structure, Morphology, and Surface Related Properties of Novel Poly(dimethylsiloxane)-Based Polyurethane/Organoclay Nanocomposites" in Industrial & Engineering Chemistry Research, 56, no. 17 (2017):4970-4983,
https://doi.org/10.1021/acs.iecr.6b04913 .,
conv_658 .

TY  - JOUR
AU  - Stanković, Branislav
AU  - Jovanović, Jelena
AU  - Ostojić, Sanja
AU  - Adnađević, Borivoj
PY  - 2017
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/568
AB  - The applicability of distributed activation energy model (DAEM) for describing non-isothermal dehydration kinetics of poly(acrylic acid)-g-gelatin (PAG) hydrogel has been examined. Thermogravimetric curves were recorded at different heating rates from 5 to 20 K min(-1). The activation energy dependence on dehydration degree was determined by Kissinger-Akahira-Sunose and Vyazovkin's methods. The possibility of applying thermodynamically inhibited nucleation and growth reaction model on investigating process has been examined. Miura-Maki method was used to establish the shape of activation energy distribution function and the dependence of pre-exponential factor on dehydration degree. Non-isothermal dehydration kinetics of PAG hydrogel can be successfully described by the DAEM. Here we defined the procedure by which DAEM can be successfully connected with kinetic models commonly used for reactions in solid state. The dependences of specific rate (i.e., rate constant) and reaction model function on dehydration degree were established for all of the investigated heating rates. It has been concluded that the specific rate changes with dehydration degree and that this is the one of the reasons why non-isothermal dehydration kinetics of PAG hydrogel is complex.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Kinetic analysis of non-isothermal dehydration of poly(acrylic acid)-g-gelatin hydrogel using distributed activation energy model
EP  - 551
IS  - 1
SP  - 541
VL  - 129
DO  - 10.1007/s10973-017-6180-0
UR  - conv_664
ER  - 

@article{
author = "Stanković, Branislav and Jovanović, Jelena and Ostojić, Sanja and Adnađević, Borivoj",
year = "2017",
abstract = "The applicability of distributed activation energy model (DAEM) for describing non-isothermal dehydration kinetics of poly(acrylic acid)-g-gelatin (PAG) hydrogel has been examined. Thermogravimetric curves were recorded at different heating rates from 5 to 20 K min(-1). The activation energy dependence on dehydration degree was determined by Kissinger-Akahira-Sunose and Vyazovkin's methods. The possibility of applying thermodynamically inhibited nucleation and growth reaction model on investigating process has been examined. Miura-Maki method was used to establish the shape of activation energy distribution function and the dependence of pre-exponential factor on dehydration degree. Non-isothermal dehydration kinetics of PAG hydrogel can be successfully described by the DAEM. Here we defined the procedure by which DAEM can be successfully connected with kinetic models commonly used for reactions in solid state. The dependences of specific rate (i.e., rate constant) and reaction model function on dehydration degree were established for all of the investigated heating rates. It has been concluded that the specific rate changes with dehydration degree and that this is the one of the reasons why non-isothermal dehydration kinetics of PAG hydrogel is complex.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Kinetic analysis of non-isothermal dehydration of poly(acrylic acid)-g-gelatin hydrogel using distributed activation energy model",
pages = "551-541",
number = "1",
volume = "129",
doi = "10.1007/s10973-017-6180-0",
url = "conv_664"
}

Stanković, B., Jovanović, J., Ostojić, S.,& Adnađević, B.. (2017). Kinetic analysis of non-isothermal dehydration of poly(acrylic acid)-g-gelatin hydrogel using distributed activation energy model. in Journal of Thermal Analysis and Calorimetry, 129(1), 541-551.
https://doi.org/10.1007/s10973-017-6180-0
conv_664

Stanković B, Jovanović J, Ostojić S, Adnađević B. Kinetic analysis of non-isothermal dehydration of poly(acrylic acid)-g-gelatin hydrogel using distributed activation energy model. in Journal of Thermal Analysis and Calorimetry. 2017;129(1):541-551.
doi:10.1007/s10973-017-6180-0
conv_664 .

Stanković, Branislav, Jovanović, Jelena, Ostojić, Sanja, Adnađević, Borivoj, "Kinetic analysis of non-isothermal dehydration of poly(acrylic acid)-g-gelatin hydrogel using distributed activation energy model" in Journal of Thermal Analysis and Calorimetry, 129, no. 1 (2017):541-551,
https://doi.org/10.1007/s10973-017-6180-0 .,
conv_664 .

TY  - JOUR
AU  - Đonlagić, Jasna
AU  - Lancuski, Anica
AU  - Nikolić, Marija S.
AU  - Rogan, Jelena
AU  - Ostojić, Sanja
AU  - Petrović, Zoran
PY  - 2017
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/535
AB  - Two series of semiinterpenetrating networks (SIPN) based on linear hydrophilic poly(vinyl alcohol) (PVA) and thermoresponsive poly(N-isopropylacrylamide) (PNIPA), physically crosslinked with inorganic clay, are presented. The hydrogels with different crosslinking densities were prepared by varying the content of clay from 1 to 6 wt % and contained linear interpenetrant, PVA in the range of 0.5-1.5 wt %. The effect of clay content on swelling/deswelling behavior and phase transition in PNIPA gels, as well as the feasibility of reinforcing the gels with high molecular weight PVA, were analyzed. The thermal response of hydrogels, followed by DSC, confirmed that the insertion of hydrophilic PVA did not have a significant effect on the onset of the volume phase transition temperature, while the response was faster. The equilibrium degree of swelling of SIPNs and PNIPA hydrogels was in the range of 979 and decreased with increasing content of clay. The internal morphology and surface wettability of the hydrogels were investigated by scanning electron microscope analysis and contact angle measurements, respectively. The network structural parameters of the PNIPA and SIPN nanocomposites hydrogels, such as the average molecular weight between crosslinks, M-c, and effective crosslinking density, Ne, were determined by dynamic mechanical analysis.
PB  - Wiley-Blackwell, Hoboken
T2  - Journal of Applied Polymer Science
T1  - Hydrogels reinforced with nanoclays with improved response rate
IS  - 9
VL  - 134
DO  - 10.1002/app.44535
UR  - conv_633
ER  - 

@article{
author = "Đonlagić, Jasna and Lancuski, Anica and Nikolić, Marija S. and Rogan, Jelena and Ostojić, Sanja and Petrović, Zoran",
year = "2017",
abstract = "Two series of semiinterpenetrating networks (SIPN) based on linear hydrophilic poly(vinyl alcohol) (PVA) and thermoresponsive poly(N-isopropylacrylamide) (PNIPA), physically crosslinked with inorganic clay, are presented. The hydrogels with different crosslinking densities were prepared by varying the content of clay from 1 to 6 wt % and contained linear interpenetrant, PVA in the range of 0.5-1.5 wt %. The effect of clay content on swelling/deswelling behavior and phase transition in PNIPA gels, as well as the feasibility of reinforcing the gels with high molecular weight PVA, were analyzed. The thermal response of hydrogels, followed by DSC, confirmed that the insertion of hydrophilic PVA did not have a significant effect on the onset of the volume phase transition temperature, while the response was faster. The equilibrium degree of swelling of SIPNs and PNIPA hydrogels was in the range of 979 and decreased with increasing content of clay. The internal morphology and surface wettability of the hydrogels were investigated by scanning electron microscope analysis and contact angle measurements, respectively. The network structural parameters of the PNIPA and SIPN nanocomposites hydrogels, such as the average molecular weight between crosslinks, M-c, and effective crosslinking density, Ne, were determined by dynamic mechanical analysis.",
publisher = "Wiley-Blackwell, Hoboken",
journal = "Journal of Applied Polymer Science",
title = "Hydrogels reinforced with nanoclays with improved response rate",
number = "9",
volume = "134",
doi = "10.1002/app.44535",
url = "conv_633"
}

Đonlagić, J., Lancuski, A., Nikolić, M. S., Rogan, J., Ostojić, S.,& Petrović, Z.. (2017). Hydrogels reinforced with nanoclays with improved response rate. in Journal of Applied Polymer Science
Wiley-Blackwell, Hoboken., 134(9).
https://doi.org/10.1002/app.44535
conv_633

Đonlagić J, Lancuski A, Nikolić MS, Rogan J, Ostojić S, Petrović Z. Hydrogels reinforced with nanoclays with improved response rate. in Journal of Applied Polymer Science. 2017;134(9).
doi:10.1002/app.44535
conv_633 .

Đonlagić, Jasna, Lancuski, Anica, Nikolić, Marija S., Rogan, Jelena, Ostojić, Sanja, Petrović, Zoran, "Hydrogels reinforced with nanoclays with improved response rate" in Journal of Applied Polymer Science, 134, no. 9 (2017),
https://doi.org/10.1002/app.44535 .,
conv_633 .

TY  - JOUR
AU  - Stefanović, Ivan S.
AU  - Spirkova, Milena
AU  - Ostojić, Sanja
AU  - Stefanov, Plamen
AU  - Pavlović, Vladimir B.
AU  - Pergal, Marija V.
PY  - 2017
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/502
AB  - The aim of this work was to prepare and characterize the series of segmented polyurethane nanocomposites (PUNC) modified with poly(dimethylsiloxane) and based on montmorillonite (Mt) as a nano-filler. alpha,omega-Dihydroxy-poly(propylene oxide)-b-poly(dimethylsiloxane)-b-poly(propylene oxide) macrodiol was used as the soft segment component, while 4,4'-diphenylmethane diisocyanate (MDI) and 1,4-butanediol (BD) were selected as the hard segment components. PUNC were synthesized with different ratio of hard/soft segments. PUNC were morphologically, structurally, thermally, mechanically and surface characterized by XRD, TEM, FTIR, AFM, TGA, DMTA, tensile test, XPS, contact angle, surface free energy (SFE) and water absorption measurements. Added Mt (1 wt%) was completely delaminated and well dispersed in the form of mixed exfoliated/intercalated layers in the polymer matrix, and that PUNC have more pronounced microphase separated morphology, higher thermal stability, superior mechanical features, enhanced surface properties, as well as outstanding hydrophobicity. Due to the improved features, developed polymers can be considered as candidates for materials with specific biomedical applications or as waterproof coatings.
PB  - Elsevier
T2  - Applied Clay Science
T1  - Montmorillonite/poly(urethane-siloxane) nanocomposites: Morphological, thermal, mechanical and surface properties
EP  - 146
SP  - 136
VL  - 149
DO  - 10.1016/j.clay.2017.08.021
UR  - conv_687
ER  - 

@article{
author = "Stefanović, Ivan S. and Spirkova, Milena and Ostojić, Sanja and Stefanov, Plamen and Pavlović, Vladimir B. and Pergal, Marija V.",
year = "2017",
abstract = "The aim of this work was to prepare and characterize the series of segmented polyurethane nanocomposites (PUNC) modified with poly(dimethylsiloxane) and based on montmorillonite (Mt) as a nano-filler. alpha,omega-Dihydroxy-poly(propylene oxide)-b-poly(dimethylsiloxane)-b-poly(propylene oxide) macrodiol was used as the soft segment component, while 4,4'-diphenylmethane diisocyanate (MDI) and 1,4-butanediol (BD) were selected as the hard segment components. PUNC were synthesized with different ratio of hard/soft segments. PUNC were morphologically, structurally, thermally, mechanically and surface characterized by XRD, TEM, FTIR, AFM, TGA, DMTA, tensile test, XPS, contact angle, surface free energy (SFE) and water absorption measurements. Added Mt (1 wt%) was completely delaminated and well dispersed in the form of mixed exfoliated/intercalated layers in the polymer matrix, and that PUNC have more pronounced microphase separated morphology, higher thermal stability, superior mechanical features, enhanced surface properties, as well as outstanding hydrophobicity. Due to the improved features, developed polymers can be considered as candidates for materials with specific biomedical applications or as waterproof coatings.",
publisher = "Elsevier",
journal = "Applied Clay Science",
title = "Montmorillonite/poly(urethane-siloxane) nanocomposites: Morphological, thermal, mechanical and surface properties",
pages = "146-136",
volume = "149",
doi = "10.1016/j.clay.2017.08.021",
url = "conv_687"
}

Stefanović, I. S., Spirkova, M., Ostojić, S., Stefanov, P., Pavlović, V. B.,& Pergal, M. V.. (2017). Montmorillonite/poly(urethane-siloxane) nanocomposites: Morphological, thermal, mechanical and surface properties. in Applied Clay Science
Elsevier., 149, 136-146.
https://doi.org/10.1016/j.clay.2017.08.021
conv_687

Stefanović IS, Spirkova M, Ostojić S, Stefanov P, Pavlović VB, Pergal MV. Montmorillonite/poly(urethane-siloxane) nanocomposites: Morphological, thermal, mechanical and surface properties. in Applied Clay Science. 2017;149:136-146.
doi:10.1016/j.clay.2017.08.021
conv_687 .

Stefanović, Ivan S., Spirkova, Milena, Ostojić, Sanja, Stefanov, Plamen, Pavlović, Vladimir B., Pergal, Marija V., "Montmorillonite/poly(urethane-siloxane) nanocomposites: Morphological, thermal, mechanical and surface properties" in Applied Clay Science, 149 (2017):136-146,
https://doi.org/10.1016/j.clay.2017.08.021 .,
conv_687 .

TY  - JOUR
AU  - Nešić, Aleksandra
AU  - Panić, Vesna
AU  - Ostojić, Sanja
AU  - Micić, Darko
AU  - Pajić-Lijaković, Ivana
AU  - Onjia, Antonije
AU  - Veličković, Sava J.
PY  - 2016
UR  - https://riofh.iofh.bg.ac.rs/handle/123456789/487
AB  - This article described the synthesis and characterization of new copolymer hydrogels containing two hydrophilic units-methacrylic acid (MAA) and 2-Acrylamido-2-methylpropane sulfonic acid (AMPS). The resulting hydrogels were characterized by various techniques: FTIR, Elemental analysis, SEM, Dynamic Molecular simulation, Dynamic-Mechanical analysis and DSC in order to confirm the structure of hydrogels and to predict the best ratio composition with enhanced physical chemical properties. The swelling behavior in water was studied as a function of ratio of monomers and their concentration in medium. An increase in AMPS content led to expansion of network and increase in swelling degree capacity in water. An increase in AMPS content did not significantly influence the glass transition temperature of copolymers, indicated that the physical properties of initial components were preserved. The equal amount of monomers contributed to the highest strength of hydrogels. Meanwhile, the introduction of AMPS to the system was an effective method for improving the performances of the poly(methacrylic acid)- based hydrogels.
PB  - Elsevier
T2  - Materials Chemistry and Physics
T1  - Physical-chemical behavior of novel copolymers composed of methacrylic acid and 2-acrylamido-2-methylpropane sulfonic acid
EP  - 163
SP  - 156
VL  - 174
DO  - 10.1016/j.matchemphys.2016.02.063
UR  - conv_605
ER  - 

@article{
author = "Nešić, Aleksandra and Panić, Vesna and Ostojić, Sanja and Micić, Darko and Pajić-Lijaković, Ivana and Onjia, Antonije and Veličković, Sava J.",
year = "2016",
abstract = "This article described the synthesis and characterization of new copolymer hydrogels containing two hydrophilic units-methacrylic acid (MAA) and 2-Acrylamido-2-methylpropane sulfonic acid (AMPS). The resulting hydrogels were characterized by various techniques: FTIR, Elemental analysis, SEM, Dynamic Molecular simulation, Dynamic-Mechanical analysis and DSC in order to confirm the structure of hydrogels and to predict the best ratio composition with enhanced physical chemical properties. The swelling behavior in water was studied as a function of ratio of monomers and their concentration in medium. An increase in AMPS content led to expansion of network and increase in swelling degree capacity in water. An increase in AMPS content did not significantly influence the glass transition temperature of copolymers, indicated that the physical properties of initial components were preserved. The equal amount of monomers contributed to the highest strength of hydrogels. Meanwhile, the introduction of AMPS to the system was an effective method for improving the performances of the poly(methacrylic acid)- based hydrogels.",
publisher = "Elsevier",
journal = "Materials Chemistry and Physics",
title = "Physical-chemical behavior of novel copolymers composed of methacrylic acid and 2-acrylamido-2-methylpropane sulfonic acid",
pages = "163-156",
volume = "174",
doi = "10.1016/j.matchemphys.2016.02.063",
url = "conv_605"
}

Nešić, A., Panić, V., Ostojić, S., Micić, D., Pajić-Lijaković, I., Onjia, A.,& Veličković, S. J.. (2016). Physical-chemical behavior of novel copolymers composed of methacrylic acid and 2-acrylamido-2-methylpropane sulfonic acid. in Materials Chemistry and Physics
Elsevier., 174, 156-163.
https://doi.org/10.1016/j.matchemphys.2016.02.063
conv_605

Nešić A, Panić V, Ostojić S, Micić D, Pajić-Lijaković I, Onjia A, Veličković SJ. Physical-chemical behavior of novel copolymers composed of methacrylic acid and 2-acrylamido-2-methylpropane sulfonic acid. in Materials Chemistry and Physics. 2016;174:156-163.
doi:10.1016/j.matchemphys.2016.02.063
conv_605 .

Nešić, Aleksandra, Panić, Vesna, Ostojić, Sanja, Micić, Darko, Pajić-Lijaković, Ivana, Onjia, Antonije, Veličković, Sava J., "Physical-chemical behavior of novel copolymers composed of methacrylic acid and 2-acrylamido-2-methylpropane sulfonic acid" in Materials Chemistry and Physics, 174 (2016):156-163,
https://doi.org/10.1016/j.matchemphys.2016.02.063 .,
conv_605 .