17th International Conference on Fundamental and Applied Aspects of Physical Chemistry (Proceedings, Volume II) (2024) [J-01-P, pp. 409-412]
AUTHOR(S) / AUTOR(I): J. V. Džunuzović, I. S. Stefanović, E. S. Džunuzović and C. Marega 
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DOI: 10.46793/Phys.Chem24II.405DZ
ABSTRACT / SAŽETAK:
The thermal degradation of the waterborne polyurethanes (WBPUs) based on poly(dimethylsiloxane) (PDMS), isophorone diisocyanate (IPDI) and 2,2-bis- (hydroxymethyl)propionic acid (DMPA) is a complex, three-step process. Study of the kinetics of the second and third degradation steps of these WBPUs has been presented here. During the second step, PDMS chains decomposed, while in the third step degradation of residual components occurred. A comprehensive analysis of the obtained results revealed that the Zhuravlev-Lesokin- Tempelman and Avrami-Erofeev equations represent the best kinetic models that describe degradation mechanism of the examined decomposition steps of WBPUs.
KEYWORDS / KLJUČNE REČI:
ACKNOWLEDGEMENT / PROJEKAT:
This work was supported by the Ministry of Science, Technological Development and Innovation of Republic of Serbia (Grant No. 451-03-66/2024-03/200026 and 451-03-65/2024-03/200135).
REFERENCES / LITERATURA:
- I. S. Stefanović, M. Špírková, S. Ostojić, P. Stefanov, V. B. Pavlović, M. V. Pergal, Appl. Clay Sci., 149 (2017) 136.
- M. V. Pergal, I. S. Stefanović, D. Gođevac, V. V. Antić, V. Milačić, S. Ostojić, J. Rogan, J. Djonlagić, J. Serb. Chem. Soc., 79 (2014) 843.
- I. S. Stefanović, J. V. Džunuzović, E. S. Džunuzović, S. J. Brzić, E. Jasiukaitytė-Grojzdek, A. Basagni, C. Marega, Prog. Org. Coat., 161 (2021) 106474.
- P. E. Sánchez-Jiménez, L. A. Pérez-Maqueda, A. Perejón, J. M. Criado, Resour. Conserv. Recycl., 74 (2013) 75.
- P. Budrugeac, Polym. Degrad. Stab., 74 (2001) 125.
- S. Żołtowska, I. Koltsov, K. Alejski, H. Ehrlich, M. Ciałkowski, T. Jesionowski, Polym. Test., 97 (2021) 107148.
- V. Džunuzović, I. S. Stefanović, E. S. Džunuzović, A. Basagni, C. Marega, J. Polym. Res., 31 (2024) 139.
- N. X. Sun, X. D. Liu, K. Lu, Scr. Mater.,34 (1996) 1201