文献类型：期刊文献

英文题名：Synthesis of fluorinated diblock copolymer by ATRP and its application of PAVAc polymerization in ScCO2

作者：Yang, Yajun[1,2]; Wang, Zi[1,2]; Gao, Yan[1,2]; Liu, Tao[3]; Hu, Chunpu[1,2]; Dong, Qingzhi[1,2]

机构：[1] Key Laboratory for Ultrafine Materials, Ministry of Education, Shanghai 200237, China; [2] School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China; [3] Unilab Research Center of CRE, State Key Laboratory of Chemistry Engineering, East China University of Science and Technology, Shanghai 200237, China

年份：2006

卷号：102

期号：2

起止页码：1146

外文期刊名：Journal of Applied Polymer Science

收录：EI(收录号：20064110167517)

语种：英文

外文关键词：Block copolymers - Carbon dioxide - Particle size analysis - Polymerization - Precipitation (chemical) - Supercritical fluids - Synthesis (chemical)

摘要：A series of fluorinated diblock copolymers consisting of poly(styrene-r-acrylonitrile) (PSAN) and poly (1,1,2,2-tetrahydroperfluorooctyl methacrylate) (PFOMA) were prepared by atom transfer radical polymerization (ATRP). The copolymers with well-controlled molecular weight and narrow molecular weight distribution (PDI 1H NMR, GPC, and FTIR. With the amphiphilic diblock copolymers as stabilizers, acrylonitrile-vinyl acetate random copolymers were synthesized by dispersion polymerization in supercritical carbon dioxide (ScCO2). Compared with precipitation polymerization, the products prepared via dispersion polymerization possess of higher yield and higher molecular weight. In addition, via dispersion polymerization, the particle morphology of the product is spherical. And the dispersity index of the particle size distribution is very narrow. At the same reaction condition, the particle morphology of the product prepared by precipitation polymerization is irregu lar. ? 2006 Wiley Periodicals, Inc.