文献类型：期刊文献

英文题名：Further Studies on the Anionic Copolymerization of Styrene and Glycidyl Methacrylate in Toluene

作者：Zhang, Jian[1];Huang, Hui[1];Wei, Da-Fu[1];Guan, Yong[1];Hu, Fu-Zeng[1];Zheng, Anna[1];Xiao, Huining[2]

机构：[1]E China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Lab React Extrus,Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Univ New Brunswick, Dept Chem Engn, Fredericton, NB E3B 5A3, Canada

年份：2010

卷号：47

期号：6

起止页码：626

外文期刊名：JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY

收录：;EI(收录号：20101812913013);WOS:【SCI-EXPANDED(收录号:WOS:000277588600018)】；

基金：The authors would like to express their sincere gratitude to China National Nature Science Foundation (NSF, 50390090) for support. The authors would like to express their sincere gratitude to The Major Program of Nature Science Foundation of China (NSFC, 50933002) for support.

语种：英文

外文关键词：Block copolymer; glycidyl methacrylate; epoxy group; anionic copolymerization

摘要：Sequential anionic copolymerization of styrene and glycidyl methacrylate (GMA) was performed with the protection of argon under normal pressure, where styrene, GMA, toluene, THF, n-butyllithium and a small amount of lithium chloride (LiCl) were used as first monomer, second monomer, solvent, polar reagent, initiator and additive, respectively. Polystyrene-b-poly(glycidyl methacrylate) diblock copolymers (PS-b-PGMA) with well-defined structure and narrow molecular weight distribution were prepared by the copolymerization reaction of poly(styryl)lithium with GMA under certain temperatures. The copolymers were characterized using gel permeation chromatography (GPC), 1H-NMR, 13C-NMR, thin layer chromatography (TLC) and hydrochloric acid-dioxane argentimetric methods. The effects of additives, copolymerization temperature and THF dosage on the copolymerization were studied. No chain transfer reaction of anionic polymerization of styrene in toluene was observed. Slightly broader molecular weight distribution of PS-b-PGMA was observed with the increase the GMA repeat units. Using THF/toluene blend solvent could reduce the polydispersity index (Mw/Mn) and dissolve the copolymer better than toluene alone. Lower temperature ( -40 degrees C) and LiCl are required to prepare PS-b-PGMA with narrower molecular weight distribution.