The oxidation state of Ti which is catalytically active to styrene syndiotactic polymerization is trivalent state.No termination reaction occurs within the active growing cha...

• 配位聚合时，苯乙烯分子是按二级插入方式进入分子链的，间规序列的形成是活性链末端苯基与前来配位的苯乙烯苯基相互排斥作用的结果。