摘要
使用新引发剂对丙烯腈(AN)进行基团转移聚合(GTP)研究,发现 AN 具有极高的GTP 活性,很容易发生爆炸式聚合。爆炸是由聚合速度快与热扩散困难双重团素引起的。还发现了沉淀式 GTP,它是在本体聚合或以 THF 为溶剂时发生的。使用 DMF 作为 GTP 溶剂,溶剂量足够时可以抑制爆炸的发生。
Group transfer polymerization (GTP) monomer (acrylonitrile)was reported.It has very high GTP activity and an explosive polmerizationcan be observed.A detail description for acrylonitrle GTP was given.Becauseacrylonitrile is no a good solvent for poyacrylonitrile,bulk polymerization isa precipitation polymerization and difficult to conduct the plymerization heat.An explosive reaction happens in bulk polymerization.But it can be controlledby N,N-dimethylformamide solvent in solution polymerization.lf solvent vol-ume is no less than monomer volume,this solution polymerization is a ho-mogeneous polymerization and the explosive polymerization can be avoided.
基金
国家自然科学基金
86020295
关键词
丙烯腈
基团转移聚合
爆炸式
acrylonitrile
group transfer polymerization
explode
