【作者】 张可达； 包宏强； 张颖； 徐冬梅；

【Author】 Keda Zhang,Hongqiang Bao, Liqun Chang,Ying Zhang (School of Chemistry and Chemical Engineering, Suzhou University, Suzhou, 215123)

【机构】 苏州大学化学化工学院；

【摘要】 <正>原子转移自由基聚合方法以其适用单体范围广、反应条件温和等特点受到人们广泛关注．用本方法可以制备其它方法难以合成的嵌段共聚物。醋酸乙烯酯(VAc)的特殊结构决定了利用活性聚合制备其嵌段共聚物,PVAc部分的形成或先或后总离不开自由基聚合。 Matyjaszewski总结了以下几种制备该嵌段共聚物的方法:1.用ATRP法合成大分子偶氮类引更多还原

【Abstract】 The iodine-terminated polyvinyl acetate (PVAc-I) was prepared by degenerative transfer (DT) polymerization in the presence of elemental iodine. Block copolymerization of methyl methacrylate with polyvinyl acetate was carried out by ATRP, in which PVAc-I was as macro-initiator, with three complexes: CuCl/PMDETA, CuCl/MA5-DETA and FeCl2 4H2O /PPh3 as catalyst respectively. The course of polymerisation showed typical ATRP characteristics. The results of analysis of 1H-NMR and GPC traces confirmed the synthesis of PVAc-b-PMMA and narrow molecular weight distribution (Mw/Mn = 1.4- 1.8) of copolymer.更多还原