文献类型：期刊文献

英文题名：Catalytic emulsion copolymerization of styrene and ethylene by neutral nickel (II) complex

作者：Zhao, Chunbin[1]; Yuan, Qiaolong[1]

机构：[1] Key Laboratory for Ultrafine Materials, East China University of Science and Technology, Ministry of Education, Shanghai 200237, China

年份：2008

卷号：46

期号：1

起止页码：104

外文期刊名：Journal of Macromolecular Science, Part A: Pure and Applied Chemistry

收录：EI(收录号：20085011779989)

语种：英文

外文关键词：Copolymerization - Emulsion polymerization - Latexes - Ethylene - Emulsification - Catalyst activity - Nickel compounds

摘要：Catalytic copolymerization of styrene and ethylene by neutral nickel(II) complex has been performed in emulsion. The influences of the ratio of styrene to ethylene, polymerization temperature and time, ethylene pressure and polymerization procedure on the activity of catalyst and the composition of polymer were investigated in detail. The morphology of the polymer latex was observed by TEM, and the polymer was also characterized by NMR and GPC. The results showed that the latex particle was spherical, and the latex up to 10% solid content and the high-molecular-weight poly(styrene-b-ethylene) was obtained. The content of the ethylene in the copolymer was evidently enhanced by the addition of the styrene decreasing, addition of the toluene and introduction of the procedure without prepolymerization. The styrene incorporated in the copolymer were in the range of 72 mol% to 100 mol%.