CuCl/邻菲咯啉催化下苯乙烯的原子转移自由基本体和悬浮聚合  

Atom Transfer Radical Bulk and Suspension Polymerization Catalyzed by CuCl/Phenanthroline

作　　者：杜宗杰[1] 张敏[1] 严小玲[1] 朱常英[1] 

机构地区：[1]南开大学化学系,天津300071

出　　处：《南开大学学报（自然科学版）》2006年第5期91-96,共6页Acta Scientiarum Naturalium Universitatis Nankaiensis

摘　　要：以氯化亚铜(CuC l)为催化剂、廉价易得的邻菲咯啉(Phen)为配体、1-苯基氯乙烷(1-PEC l)为引发剂,研究了苯乙烯(S t)的原子转移自由基本体和悬浮聚合.动力学研究结果表明:该催化引发体系对苯乙烯的本体聚合有较好的可控性.聚合反应对单体浓度呈现一级动力学关系,分子量随转化率线性增长,分子量分布较窄(1.35);外加搅拌下开放体系中的苯乙烯悬浮聚合对单体浓度也呈现一级动力学关系,分子量也随转化率呈线性增长,但分子量分布略宽(2.29),说明只具有部分可控性.Atom transfer radical polymerization （ATRP） of styrene （St） was carried out using cuprous chloride （CuCl） as catalyst, 1,10-phenanthroline （Phen） as ligand and 1-phenylethyl chloride （1-PECl） as initiator. Both bulk and suspension polymerization was studied. Kinetic investigation showed that the plot of ln[M]0/[M]） versus time was linear in both bulk and suspension polymerization indicating that the polymerization was one order to monomer concentration. The molecular weight increased linearly with conversion also in both cases. Hoewever, bulk ATRP showed better control than suspension ATRP. Bulk ATRP was characterized by reasonably narrow molecular weight distribution （1.35）, whereas the suspension ATRP showed relatively wide molecular weight distribution （2.29）.

关 键 词：苯乙烯 原子转移自由基聚合 邻菲咯啉 

分 类 号：O631.1[理学—高分子化学]