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Vol. 24 No. 3 (2012): Vol 24 Issue 3

Thermal-Oxidative Stability of Polydimethylsiloxane

Y.P. Liu
Laboratory of Advanced Polymer Material, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China; College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, Beijing 100049, P.R. China
Z.J. Zhang
Laboratory of Advanced Polymer Material, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China

Corresponding Author(s) : Z.J. Zhang

zhangzj@iccas.ac.cn

Asian Journal of Chemistry, Vol. 24 No. 3 (2012): Vol 24 Issue 3

Abstract

Poly(ferrocenyldimethylsilane) (PFMS) and poly(ferrocenyldiphenylsilane) (PFPS) are employed as additives to enhance the thermal-oxidative stability of PDMS. The thermal-oxidative stability of PDMS, PDMS/PFMS and PDMS/PFPS compounds are characterized as chemical structure (structure of the substituent and the main chain), molecular size (molecular weight and its distribution) and material properties (shear viscosity, gel time and weight loss). The thermal-oxidative stabilities of PDMS/PFMS and PDMS/PFPS compounds at 300 ºC in air are obviously enhanced because PFMS and PFPS restrain the thermal-oxidative degradation of the methyl group and reduce the depolymerization of the main chain. The reduction of the depolymerization of the main chain is a result of the decrease in hydroxyl group formed by oxidation of methyl group. PFPS shows better antioxidation to PDMS than PFMS.

Keywords

Ploy(ferrocenylsilane) Polydimethylsiloxane Thermal-oxidative stability Additives
Liu, Y., & Zhang, Z. (2011). Thermal-Oxidative Stability of Polydimethylsiloxane. Asian Journal of Chemistry, 24(3), 1141–1146. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/8727
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