Hydrolytic, thermal and radiation stability of modified urea-formaldehyde composites: Influence of montmorillonite particle size
Само за регистроване кориснике
2022
Аутори
Samaržija-Jovanović, SuzanaJovanović, Vojislav
Jovanović, Tijana
Kostić, Marija
Petković, Branka
Marković, Gordana
Marinović-Cincović, Milena
Чланак у часопису (Објављена верзија)
,
© 2022 Elsevier Ltd.
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Urea-formaldehyde (UF) composites with a formaldehyde/urea (FA/U) ratio = 0.8 and different particle sizes of montmorillonite (MMT), namely UF/KSF and UF/K10 were synthesized. The hydrolytic stability of modified UF composites was determined by measuring the content of the liberated formaldehyde of modified UF composites after acid hydrolysis. The synthesized modified UF composites were irradiated (50 kGy) and the effect of γ–irradiation was evaluated on the basis of these thermal behaviors. The thermal behavior was studied by non-isothermal thermo-gravimetric analysis (TG), differential thermo-gravimetry (DTG), and differential thermal analysis (DTA) supported by data from Fourier transform infrared spectroscopy (FTIR). The minimum percentages of free (0.4%) and liberated (1.2%) formaldehyde were obtained in the UF/KSF composite. The modified UF/KSF composite shows better radiation resistance than the modified UF/K10 composite. The shift of temperature values for the selected mass los...ses (T5%) to higher temperatures indicates an increase in the thermal stability of the UF/K10 composite after γ–irradiation. γ–irradiation causes a decrease in the absorption intensity of bands in the FTIR spectrum of a modified UF/KSF composite and an increase in the absorption intensity of bands in the FTIR spectrum of a modified UF/K10 composite. © 2022 Elsevier Ltd
Кључне речи:
Adhesives for wood / Hydrolytic stability / Infrared spectroscopy / Montmorillonite / Resin-based composites / Thermal analysisИзвор:
International Journal of Adhesion and Adhesives, 2022, 115, 103131-Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200123 (Универзитет у Приштини са привременим седиштем у Косовској Митровици, Природно-математички факултет) (RS-MESTD-inst-2020-200123)
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200017 (Универзитет у Београду, Институт за нуклеарне науке Винча, Београд-Винча) (RS-MESTD-inst-2020-200017)
DOI: 10.1016/j.ijadhadh.2022.103131
ISSN: 0143-7496
WoS: 000773877000002
Scopus: 2-s2.0-85125465554
Колекције
Институција/група
VinčaTY - JOUR AU - Samaržija-Jovanović, Suzana AU - Jovanović, Vojislav AU - Jovanović, Tijana AU - Kostić, Marija AU - Petković, Branka AU - Marković, Gordana AU - Marinović-Cincović, Milena PY - 2022 UR - https://vinar.vin.bg.ac.rs/handle/123456789/10193 AB - Urea-formaldehyde (UF) composites with a formaldehyde/urea (FA/U) ratio = 0.8 and different particle sizes of montmorillonite (MMT), namely UF/KSF and UF/K10 were synthesized. The hydrolytic stability of modified UF composites was determined by measuring the content of the liberated formaldehyde of modified UF composites after acid hydrolysis. The synthesized modified UF composites were irradiated (50 kGy) and the effect of γ–irradiation was evaluated on the basis of these thermal behaviors. The thermal behavior was studied by non-isothermal thermo-gravimetric analysis (TG), differential thermo-gravimetry (DTG), and differential thermal analysis (DTA) supported by data from Fourier transform infrared spectroscopy (FTIR). The minimum percentages of free (0.4%) and liberated (1.2%) formaldehyde were obtained in the UF/KSF composite. The modified UF/KSF composite shows better radiation resistance than the modified UF/K10 composite. The shift of temperature values for the selected mass losses (T5%) to higher temperatures indicates an increase in the thermal stability of the UF/K10 composite after γ–irradiation. γ–irradiation causes a decrease in the absorption intensity of bands in the FTIR spectrum of a modified UF/KSF composite and an increase in the absorption intensity of bands in the FTIR spectrum of a modified UF/K10 composite. © 2022 Elsevier Ltd T2 - International Journal of Adhesion and Adhesives T1 - Hydrolytic, thermal and radiation stability of modified urea-formaldehyde composites: Influence of montmorillonite particle size VL - 115 SP - 103131 DO - 10.1016/j.ijadhadh.2022.103131 ER -
@article{ author = "Samaržija-Jovanović, Suzana and Jovanović, Vojislav and Jovanović, Tijana and Kostić, Marija and Petković, Branka and Marković, Gordana and Marinović-Cincović, Milena", year = "2022", abstract = "Urea-formaldehyde (UF) composites with a formaldehyde/urea (FA/U) ratio = 0.8 and different particle sizes of montmorillonite (MMT), namely UF/KSF and UF/K10 were synthesized. The hydrolytic stability of modified UF composites was determined by measuring the content of the liberated formaldehyde of modified UF composites after acid hydrolysis. The synthesized modified UF composites were irradiated (50 kGy) and the effect of γ–irradiation was evaluated on the basis of these thermal behaviors. The thermal behavior was studied by non-isothermal thermo-gravimetric analysis (TG), differential thermo-gravimetry (DTG), and differential thermal analysis (DTA) supported by data from Fourier transform infrared spectroscopy (FTIR). The minimum percentages of free (0.4%) and liberated (1.2%) formaldehyde were obtained in the UF/KSF composite. The modified UF/KSF composite shows better radiation resistance than the modified UF/K10 composite. The shift of temperature values for the selected mass losses (T5%) to higher temperatures indicates an increase in the thermal stability of the UF/K10 composite after γ–irradiation. γ–irradiation causes a decrease in the absorption intensity of bands in the FTIR spectrum of a modified UF/KSF composite and an increase in the absorption intensity of bands in the FTIR spectrum of a modified UF/K10 composite. © 2022 Elsevier Ltd", journal = "International Journal of Adhesion and Adhesives", title = "Hydrolytic, thermal and radiation stability of modified urea-formaldehyde composites: Influence of montmorillonite particle size", volume = "115", pages = "103131", doi = "10.1016/j.ijadhadh.2022.103131" }
Samaržija-Jovanović, S., Jovanović, V., Jovanović, T., Kostić, M., Petković, B., Marković, G.,& Marinović-Cincović, M.. (2022). Hydrolytic, thermal and radiation stability of modified urea-formaldehyde composites: Influence of montmorillonite particle size. in International Journal of Adhesion and Adhesives, 115, 103131. https://doi.org/10.1016/j.ijadhadh.2022.103131
Samaržija-Jovanović S, Jovanović V, Jovanović T, Kostić M, Petković B, Marković G, Marinović-Cincović M. Hydrolytic, thermal and radiation stability of modified urea-formaldehyde composites: Influence of montmorillonite particle size. in International Journal of Adhesion and Adhesives. 2022;115:103131. doi:10.1016/j.ijadhadh.2022.103131 .
Samaržija-Jovanović, Suzana, Jovanović, Vojislav, Jovanović, Tijana, Kostić, Marija, Petković, Branka, Marković, Gordana, Marinović-Cincović, Milena, "Hydrolytic, thermal and radiation stability of modified urea-formaldehyde composites: Influence of montmorillonite particle size" in International Journal of Adhesion and Adhesives, 115 (2022):103131, https://doi.org/10.1016/j.ijadhadh.2022.103131 . .