Thermal degradation behaviors of poly (dimethylsiloxane)-urethane-graft-poly (methyl methacrylate) copolymers based on various diisocyanates

被引：0
作者：
Chen-Chi M. Ma
Yi-Chang Du
Feng-Yih Wang
机构：
[1] National Tsing-Hua University,Department of Chemical Engineering
来源：
Journal of Materials Science | 2002年 / 37卷
关键词：
Polymer; Methyl; Evaporation; Free Radical; Thermal Decomposition;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The thermal decomposition behaviors of slightly crosslinked poly(dimethylsiloxane)-urethane-graft-poly(methyl methacrylate) (PDMS-urethane-g-PMMA) copolymers based on two diisocyanates: 2,4-toluene diisocyanate (2,4-TDI) and m-xylene diisocyanate (m-XDI) are discussed. By analyzing the residues of the decomposed copolymers and thermal degradation behaviors of copolymers, it was proposed that poly(dimethylsiloxane) (PDMS) in the copolymers traps free radicals generated from the thermal decomposition of the copolymer and reduces the rate of thermal decomposition. In addition, the crosslinking structure of PDMS can also reduce the evaporation of volatiles from the thermal decomposition process.
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页码：1247 / 1252
页数：5
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