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Thermal degradation of syndiotactic polypropylene and the influence of stereoregularity on the thermal degradation behaviour by in situ FTIR spectroscopy by Peng He; Yan Xiao; Puming Zhang; Chunhua Xing; Na Zhu; Xinyuan Zhu; Deyue Yan is a scholarly article available to read on EtoBox.

What is Thermal degradation of syndiotactic polypropylene and the influence of stereoregularity on the thermal degradation behaviour by in situ FTIR spectroscopy about?

The thermal degradation of syndiotactic polypropylene (sPP) and the influence of stereoregularity on the thermal degradation behaviour have been studied by in situ Fourier transform infrared (FTIR) spectroscopy. With the aid of the time-resolved FTIR, the conventional kinetic parameters, such as the degradation activation energy DE and the degradation factor n, can be calculated. The experimental results show that sPP decomposes by random chain scissions. More importantly, the difference of degradation activation energy from some characteristic absorption bands shows that the thermal degradation of sPP is a multi-step process, which is further confirmed by the principal components analysis (PCA). Comparing with isotactic polypropylene (iPP), the main chain of sPP is more flexible, therefore the thermal stability of sPP is much higher than iPP.

Author

Peng He; Yan Xiao; Puming Zhang; Chunhua Xing; Na Zhu; Xinyuan Zhu; Deyue Yan

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0141-3910)

Published

2005

Language

EN