摘要
苯乙烯和丙烯酸丁酯自由基共聚合竞聚率测定与研究吴平平，吴玉芳，杨全兴，韩哲文朱清仁（华东理工大学高分子材料研究所，上海，２００２３７）（中国科技大学结构分析开放实验室）关键词苯乙烯，丙烯酸丁酯，竞聚率，序列分布苯乙烯和丙烯酸丁酯是重要的共聚合体系。然...
In this study, copolymerizations of styrene(St,M1) and butyl acrylate(BA,M2)were carried Out at 60,80, 100, 120 and 140℃ at two sensitive feed compositions. Compositions of copolymers were analyzed by 1H NMR, Reactivity ratios were calculated by Errorin-Variable method to be r1=0.688.r2=0.157; r1=0.378,r2=0.174;r1=0.772,r2=0. 201; r1=0.810,r2=0.216 and r1=0.851,r2=0.241 at various polymerization temperatures above. The differences of activation energies between homo-polymerization and copoly merization were obtained to be E11-E12=2.97KJ/mol,E22-E21=6.13KJ/mol, The chain length distribution at 60℃ and Q, e values of BA at 60℃ were also calculated.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1995年第10期1653-1655,共3页
Chemical Journal of Chinese Universities
关键词
苯乙烯
丙烯酸丁酯
竞聚率
自由基共聚合
Styrene, Butyl acrylate, Reactivity ratio,Series distribution
