Lewis酸改性烷基锂负离子聚合研究进展 Ⅴ.添加剂对烷基锂引发丁二烯或苯乙烯/丁二烯聚合的影响  

Progress in research of Lewis acids modified alkyllithium initiated anionic polymerization Ⅴ. Influence of additives on alkyllithium initiators in anionic polymerization of butadiene or styrene/butadiene

作　　者：王德充 梁爱民[2] 

机构地区：[1]中国合成橡胶工业协会,北京100120 [2]中国石化北京燕山分公司研究院,北京102500

出　　处：《合成橡胶工业》2011年第1期2-7,共6页China Synthetic Rubber Industry

摘　　要：介绍了Lewis酸添加剂对RLi在非极性溶剂中引发丁二烯或苯乙烯/丁二烯负离子聚合的影响。在Mg(n,s-Bu)2存在下,聚合物的1,2-结构含量随[Mg(n,s-Bu)2]/[RLi]的增大而增加。相反,Al(i-Bu)3/RLi体系对聚丁二烯微观结构的改变未产生任何影响,并且与s-BuLi的引发结果相同。对苯乙烯/丁二烯共聚的竞聚率测试结果表明,无论在Mg(n,s-Bu)2或Al(i-Bu)3体系存在下,所得产物均为类过渡型共聚物。The influence of Lewis acid additives on the anionic polymerization of butadiene or styrene/butadiene using lithium alkyl as initiator in non-polar solvent were introduced.In the presence of Mg（n,s-Bu）2,the content of 1,2-unit increased with the [Mg（n,s-Bu）2]/.In contrast,the Al（i-Bu）3/RLi system did not yield any variation of polybutadiene microstructure,which remained close to the one observed in the polymerization initiated with s-BuLi alone.The determination of the reactivity ratios in styrene-butadiene copolymerization showed that tapered-like copolymers were obtained in the presence of both Mg（n,s-Bu）2 and Al（i-Bu）3.

关 键 词：LEWIS酸 丁二烯 1 2-结构含量 竞聚率 烷基锂 类过渡型共聚物 

分 类 号：TQ330.1[化学工程—橡胶工业]