摘要
用 GPC法测定了 PC样品的分子量及其分布 ,用原位动态 FT- IR、TG对国内外生产的 PC样品的热稳定性进行了研究。结果表明 ,PC样品的分子量及其分布是影响 PC热稳定性的主要因素 ,分子量越大、分布指数越小、低分子含量越低 ,则
The molecular distribution has been measured with Gel permeation Chromatography. The results show that the distribution of PC prepared by foreign countries is narrower than that of the domestic. The thermal stability of PC studied by in situ dynamic FT IR displays that the broken temperature range of ether linkage of PC is 350~380 ℃. The results of TG analysis show that the starting temperature range of decomposition of PC is 350~370 ℃, and the decompositing temperature range is 450~500 ℃. The difference of thermal stability between samples mainly lies in the molecular distribution of samples.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2001年第2期53-56,共4页
Polymer Materials Science & Engineering
基金
国家"九五"攻关计划
