摘要
研究了以辛酸亚锡为催化剂的 ε-己内酯与聚乙二醇在 110℃的熔体开环聚合制备 PCL/ PEG嵌段共聚物 ,分步加入 ε-己内酯对嵌段聚合物的分子量有大幅度提高。研究了催化剂用量、反应时间及 PEG分子量对 PCL/
The synthesis of PCL/PEG block polymer was investigated in this paper. Effects of amount of catalyst, reaction time and molecular weight of PEG on the synthesis of PCL/PEG were studied. High molecular weight PCL/PEG block polymers were obtained by two step additions of ε caprolactone and stannous octoate as catalyst at 110 ℃ for 24~48 h, without transesterification. PCL/PEG block polymer was characterized by 1H NMR, FT IR, DSC and GPC.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2000年第5期156-157,160,共3页
Polymer Materials Science & Engineering
基金
:中国科学院院长特别基金资助项目
