苯乙烯类单体等规均/共聚物的合成与表征

摘要

Using nBuLi as initiator and adding organometallic, a double metallic anionic polymerization system was built.The synthetic conditions of stereoregular PS were also investigated and the styrene (St) homopotymer with 31％ isotacticity was prepared. On this basis, with St and chloromethylstyrene(CMS) as the monomer, their copolymerization was triggered by nBuLi. Then the copolymer of St and CMS[ P( St-co-CMS ) ] with 45％ isotacticity was prepared. The products were characterized by FIIR, DSC, XRD and 13 C - NMR and their structures had been confirmed.%以正丁基锂(nBuLi)为引发剂,通过加入有机金属钡盐构筑双金属阴离子聚合体系,考察了立构规整性聚苯乙烯的制备条件,制得规整度为31%的苯乙烯(St)均聚物.在此基础上,以St及对氯甲基苯乙烯(CMS)为单体,用nBuLi引发共聚合,得到规整度为45%的St和CMS的共聚物P(St-co-CMS).通过傅里叶变换红外光谱仪、差示扫描量热分析仪、X射线衍射仪、核磁共振谱仪等仪器的分析证实了产物的结构.