Thermal degradation kinetics and mechanism of epoxidized natural rubber

He, Canzhong, Wang, Yueqiang, Luo, Yongyue, Kong, Lingxue and Peng, Zheng 2013, Thermal degradation kinetics and mechanism of epoxidized natural rubber, Journal of polymer engineering, vol. 33, no. 4, pp. 331-335.

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Title Thermal degradation kinetics and mechanism of epoxidized natural rubber
Author(s) He, Canzhong
Wang, Yueqiang
Luo, Yongyue
Kong, Lingxue
Peng, Zheng
Journal name Journal of polymer engineering
Volume number 33
Issue number 4
Start page 331
End page 335
Total pages 5
Publisher Walter de Gruyter GmbH & Co. KG
Place of publication Berlin, Germany
Publication date 2013
ISSN 0334-6447
2191-0219
Keyword(s) epoxidized natural rubber
kinetics
mechanism
thermal degradation
Summary Thermal resistance is one of the most dominative properties for polymer materials. Thermal degradation mechanisms of epoxidized natural rubber (ENR) and NR are studied by thermogravimetric analysis (TGA) and differential thermal analysis (DTA). The results show that, the introduction of epoxy groups into the NR molecular main chain leads to a remarkable change in the degradation mechanism. The thermal stability of ENR is worse than that of NR. For the first thermooxidative degradation stage, the thermal decomposition mechanism of ENR is similar to that of NR, which corresponds to a mechanism involving one-dimensional diffusion. For the second stage, the thermal decomposition mechanism of ENR is a three-dimensional diffusion, which is more complex than that of NR. Kinetic analysis showed that activation energy (E?), activation entropy (?H) and activation Gibbs energy (?G) values are all positive, indicating that the thermooxidative degradation process of ENR is non-spontaneous.
Language eng
Field of Research 099999 Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2013, Walter de Gruyter GmbH & Co. KG
Persistent URL http://hdl.handle.net/10536/DRO/DU:30057620

Document type: Journal Article
Collection: Institute for Frontier Materials
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