摘要
本文考察了在CH_2Cl_2介质中聚合温度、溶剂用量和反应时问对Cl_2/TiCl_4体系引发α-甲基笨乙烯聚合结果的影响。随着聚合温度的降低、溶剂用量的减少及初期反应时间的延长,产物分子量增大。聚合度与温度之间符合Arrhenius关系,聚合度活化焓为-28.7kJ.mol^(-1)·K^(-1)。同时考察了产率受上述三种因素的影响。
The influences of polymerization temperature, solvent and reaction time on the homopo-lymerization of α-methylstyrene with the Cl2/TiCl4 initiator system are investigated.The Mw of the polymer increases as the temperature lowers, and as the amount of solvent decreases While the reaction time prolongs the Mw of the polymer goes through a maximum.The relation of the DPn with temperature is well described by Arrhenius Equation. The ΔHDpn is calculated as 28.7 kJ.mol-1.K-1. In addition, the effects of the temperature, solvent and reaction time on the polymer yield are also studied,
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1989年第4期8-12,共5页
Polymer Materials Science & Engineering
