Chunqing ZHANG
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多级连续搅拌反应器中丁二烯-苯乙烯负离子溶液聚合动力学
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Indexed by:期刊论文

Date of Publication:2007-03-15

Journal:合成橡胶工业

Included Journals:PKU、ISTIC、CSCD

Volume:30

Issue:2

Page Number:97-101

ISSN No.:1000-1255

Key Words:丁二烯;苯乙烯;负离子溶液聚合;多级连续搅拌反应器;动力学;表观反应速率常数;竞聚率;表观反应活化能

Abstract:采用多级串联连续溶液聚合工艺,以n-BuLi为引发剂,四氢呋喃(THF)为结构调节剂,环己烷为溶剂,研究了不同平均停留时间、不同n-BuLi浓度以及聚合温度等反应条件对丁二烯(Bd)-苯乙烯(St)连续溶液共聚合反应动力学的影响.结果表明:在THF/[n-BuLi](摩尔比)为30、Bd/St(质量比)为7/3、聚合温度为80 ℃的条件下,多级串联连续溶液共聚合反应过程中Bd和St共聚合反应速率对[n-BuLi]呈近一次方关系,对单体浓度呈一次方关系;Bd的反应活化能为40.15 kJ/mol,St的反应活化能为36.75 kJ/mol.在上述同样的条件下而聚合温度为50~90 ℃时,Bd和St共聚合反应的竞聚率随温度的增加逐渐趋同.

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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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