星形多官能团大分子接枝合成支化聚异丁烯的研究  

Synthesis of Star-Branched Polyisobutylene by Grafting from a Star-Shaped Multifunctional Polymer

作　　者：刘海峰[1] 李杨[1] 任艳[1] 王正胜[1] 赵锦波[2] 王玉荣[1] 

机构地区：[1]大连理工大学化工学院高分子材料系,辽宁大连116012 [2]北京燕山石化公司研究院,北京100250

出　　处：《高分子材料科学与工程》2007年第2期238-241,共4页Polymer Materials Science & Engineering

基　　金：中石化资助项目(404038)

摘　　要：采用活性阴离子聚合技术,以BuLi为引发剂,DVB为偶联剂,在环己烷体系中合成了星形多官能团大分子PS-b-PI。然后以此星形大分子作为接枝剂,通过阳离子聚合,合成了一种在每个星形大分子的臂上接枝几个聚异丁烯的新型支化聚合物,并对其进行了GPC、1H-NMR、FT-IR等分析表征,讨论了不同的加料顺序对其的影响,1H-NMR结果表明其接枝效率达80%左右。A star-shaped multifunctional styrene-isoprene copolymer was synthesized in the present of n-BuLi as initiator, divinyl benzene as coupling agent, cyclohexane as solvent by living anionic polymerization. Then using this polymer as grafting agent, a novel branched polymer that each arm of star-shaped PS-b-PI contained several polyisobutylene was prepared via cationic poly- merization. The star PS-b-PI and star-branched polyisobutylene were characterized by GPC, ^1H- NMR and FT-IR, and the effect of different adding order was investigated. The ^1H-NMR results show that the grafting efficiency is about 80%.

关 键 词：阴离子聚合 阳离子聚合 星形大分子 支化聚合物 接枝 

分 类 号：TQ316.343[化学工程—高聚物工业]