Chunqing ZHANG
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氮官能化多锂引发丁二烯/异戊二烯/苯乙烯聚合动力学
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Indexed by:期刊论文

Date of Publication:2006-11-25

Journal:合成橡胶工业

Included Journals:PKU、ISTIC、CSCD

Volume:29

Issue:6

Page Number:419-423

ISSN No.:1000-1255

Key Words:苯乙烯;异戊二烯;丁二烯;负离子聚合;氮官能化多锂;星形集成橡胶;聚合动力学

Abstract:以自制氮官能化多锂(以下简称Li)为引发剂,N,N,N′,N′-四甲基乙二胺(TMEDA)为极性调节剂,环己烷为溶剂,对苯乙烯(St)、异戊二烯(Ip)、丁二烯(Bd)进行负离子聚合,合成了星形集成橡胶丁二烯-异戊二烯-苯乙烯三元共聚物(SIBR),研究了不同TMEDA/Li(摩尔比)下SIBR的聚合反应动力学.结果表明,在三元共聚合反应中,3种单体的反应速率与其各自浓度均符合一级动力学关系;在SIBR的合成体系中,随着TMEDA/Li的增大,Bd的反应速率常数先升高后降低,St的反应速率常数逐渐增加,Ip的反应速率常数逐渐降低;当TMEDA/Li为1.0、二乙烯基苯(DVB)/LI(摩尔比)为0.8、引发剂浓度为7.69×10-4mol/L时,单体Bd,Ip,St的表观增长反应活化能分别为31.59,47.64,31.76 kJ/mol,链增长频率因子分别为1.02 ×104,1.09 ×106,5.27 ×103min-1.

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Gender:Male

Alma Mater:Dalian University of Technology

Degree:Doctoral Degree

School/Department:Dept. of Polymer Materials

Discipline:Polymer Materials. Polymer Chemistry and Physics. Chemistry and Chemical Engineering of Functional

Business Address:Chemical Experiment Building A303, West Campus

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