共聚物
苯乙烯
高分子化学
材料科学
原子转移自由基聚合
聚苯乙烯
异丁烯
聚合
链式转移
单体
可逆加成-断裂链转移聚合
二乙烯基苯
自由基聚合
聚合物
复合材料
作者
Katja Jankova,Jørgen Kops,Xianyi Chen,Bo Gao,Walther Batsberg
标识
DOI:10.1007/s002890050412
摘要
A poly(styrene-b-isobutylene-b-styrene) triblock copolymer has been prepared by a two-step process. Polyisobutylene with Mn= 6600 and Mw/Mn= 1.12 functionalized with phenol at both ends was reacted with 2-bromopropionyl chloride to form a macroinitioator for atom transfer radical polymerization (ATRP). The synthesized difunctional PIB macroinitiator was subsequently heated with styrene xylene solution in the second step to 110°C under conditions for ATRP using the copper coordination complex CuBr/bipyridine. Both the macroinitiator and the triblock copolymer were characterized by 1H NMR and SEC. The triblock copolymer with around 25% polystyrene was found to have a narrow molecular weight distribution of 1.20.
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