Novel polyurethane network/organoclay nanocomposites: Microstructure and physicochemical properties
Нема приказа
Аутори
Pergal, Marija, VGojgić-Cvijović, Gordana
Steinhart, Miloš
Manojlović, Dragan
Ostojić, Sanja
Pezo, Lato
Spirkova, Milena
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
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 biodegr...adation 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.
Кључне речи:
Polyurethanes / Organoclay / Nanocomposites / Functional properties / Coatings / AFMИзвор:
Progress in Organic Coatings, 2022, 163Издавач:
- Elsevier
Финансирање / пројекти:
- Czech Science Foundation (Grant Agency of the Czech Republic) [18-03932S]
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200026 (Универзитет у Београду, Институт за хемију, технологију и металургију - ИХТМ) (RS-MESTD-inst-2020-200026)
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200168 (Универзитет у Београду, Хемијски факултет) (RS-MESTD-inst-2020-200168)
DOI: 10.1016/j.porgcoat.2021.106664
ISSN: 0300-9440
WoS: 000736595300001
Scopus: 2-s2.0-85120948063
Институција/група
Institut za opštu i fizičku hemijuTY - 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 .