摘要
用电导法研究了2,5,8-三氧壬烷(IG)浓度为40％,(体积比)时,n-BuLi引发的α-甲基苯乙烯阴离子聚合反应。证实了此时存在自由离子,并用Krauss法求出了该体系的自由离子解缔常数(1.64×10^(-5)M,20℃)。
In present paper,the anionic polymerization of alphamethylstyrene initiated by n-butyllthium,cyclohexane as solvent,2,5,8-trioxanonane(IG) as additive was investigated(20℃) by conductivity method. The fact that free ions existed in polymerization system when IG concentration was about 40% (volume ratio) was proved by conductivity experimental. The disassociation constant of free ion was obtained using Krauss' S calculation method (1. 64×10-5M,20℃).
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1992年第1期16-19,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金
关键词
甲基苯乙烯
阴离子
聚合
polymerization, anionic polymerization, alphamethylstyrene.
