新型超支化接枝共聚物的合成

摘要

A hyperbranched polymer(h-PCMS, 4) with different branching degrees were prepared by atom transfer radical polymerization( ATRP) of chloromethylstyrene( CMS) as reactive monomer in the presence of CuCl/2,2′-bipyridine(bpy) as catalyst. Two new star-shaped grafted copolymers were pre-pared using 4 as a macro-initiator by second monomer polymerization. The structures were character-ized by 1 H NMR, IR and GPC.%以对氯甲基苯乙烯(CMS)为活性单体,CuCl/2,2′-联吡啶(bpy)为催化体系,利用原子转移自由基聚合( ATRP)方法,制备具有不同支化度的超支化聚对氯甲基苯乙烯( h-PCMS,4)；以4为大分子引发剂,引发第二单体进行聚合,合成了两个以4为核的新型星状多臂共聚物,其结构经1 H NMR, IR和GPC表征。