文献类型：期刊文献

英文题名：Synthesis of styrene/methyl methacrylate gradient copolymer

作者：Wang, T.[1]; Liu, F.[1]; Luo, N.[1]; Ying, S.[1]; Liu, Q.[1]

机构：[1] Laboratory of Living Polymerization, ECUST, Shanghai 200237, China

年份：2001

卷号：24

期号：5

起止页码：268

外文期刊名：Hecheng Xiangjiao Gongye/China Synthetic Rubber Industry

收录：EI(收录号：2001466727590)

语种：英文

外文关键词：Copolymerization - Monomers - Polymethyl methacrylates - Polystyrenes

摘要：The gradient copolymer of styrene (St) - methyl methacrylate(MMA) via addition of MMA as a second monomer was prepared by atom transfer radical polymerization (ATRP) at 110 °C promoted by Eib - Br/CuBr/bpy. Controlled relative molecular mass and narrow relative molecular mass distributions proved that the copolymerizations had obvious "living" characteristics. The unremitting change of copolymer composition through the copolymerization proved that gradient structure was formed. Copolymerization rate and copolymer structure could be influced by copolymerization temperature and addition rate of MMA. Copolymerization rate increased when copolymerization temperature rose or MMA addition rate grew. The relative molecular mass of P(St-t-MMA) could be controlled by the mole ratio of St/Eib-Br.