Thermal degradation kinetics of functional polysiloxanes containing chloromethyl groups

Add time:08/27/2019    Source:sciencedirect.com

Functional polysiloxanes containing chloromethyl groups, namely, α, ω-Trimethylsiloxy-poly(methylchloromethyl)siloxane (PCMS) and α, ω-Trimethylsiloxy-poly(dimethyl-methylchloromethyl)siloxane (PDCMS), were synthesized in this work. The thermal degradation behaviors of the two functional polysiloxanes were investigated through thermogravimetric analysis (TGA) in nitrogen atmosphere. The two functional polysiloxanes exhibited more than two degradation stages in the temperature range of 30 °C–800 °C. The kinetic parameters of the thermal degradation of PCMS and PDCMS were determined with isoconversional methods, including Friedman and modified Kissinger–Akahira–Sunose (KAS) proposed by Starink.

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