AlCl_3/含氧引发剂催化体系合成中、高相对分子质量PIB  

Synthesis of MMPIB and HMPIB catalyzed by AlCl_3/oxygen-containing initiator

作　　者：陈亮[1] 朱志华[1] 刘振[1] 刘柏平[1] Chen Liang;Zhu Zhihua;Liu Zhen;Liu Boping(State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, Chin)

机构地区：[1]华东理工大学化学工程联合国家重点实验室,上海市200237

出　　处：《合成树脂及塑料》2017年第6期13-16,33,共5页China Synthetic Resin and Plastics

摘　　要：研究了以AlCl_3/含氧引发剂为催化体系的异丁烯阳离子聚合制备中、高相对分子质量聚异丁烯(PIB)的过程,探讨了引发剂种类、引发剂用量、聚合温度、单体用量、溶剂极性及聚合时间等对聚合的影响。结果表明:AlCl_3/苯乙醚作为引发剂,在聚合温度为-60℃的条件下,以二氯甲烷为溶剂,可制备相对分子质量为22.12×10~4的PIB,单体转化率达到99.00%以上;以正己烷与二氯甲烷为溶剂,且正己烷体积分数为50%时,可制备相对分子质量达48.56×10~4的高相对分子质量PIB。This paper explores the synthesis of middle and high molecular weight polyisobutylene（PIB）via isobutylene cationic polymerization catalyzed by AlCl3/oxygen-containing initiator system. The factors that contribute to the polymerization were investigated which include initiators,catalyst concentration, monomer concentration,solvent polarity,polymerization temperature and time. The results show that medium molecular weight PIB（Mw=22.12×104）is obtained in dichloromethane with AlCl3/phenetole as the initiator system at -60 ℃,in which the conversion of monomers reaches 99.00%. High molecular weight PIB（Mw=48.56×104）is produced with hexane/dichloromethane as the solvent in which the volume fraction of hexane is 50%.

关 键 词：聚异丁烯 三氯化铝 苯乙醚 阳离子聚合 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业]