文献类型：期刊文献

英文题名：Synthesis of EPDM-g-PMMA through atom transfer radical polymerization

作者：Wang, Xiao-Song[1]; Luo, Ning[1]; Ying, Sheng-Kang[1]

机构：[1]E China Univ Sci & Technol, Lab Living Polymerizat, Shanghai 200237, Peoples R China

年份：1999

卷号：40

期号：16

起止页码：4515

外文期刊名：POLYMER

收录：;EI(收录号：1999294681458);WOS:【SCI-EXPANDED(收录号:WOS:000079905600009)】；

语种：英文

外文关键词：ATRP; EPDM; graft-from reaction

摘要：A new method to prepare the graft copolymers that have an ethylene-propylene-diene terpolymer (EPDM) rubber backbone and poly(methyl methacrylate) (PMMA) branches was described. Firstly, the brominated EPDM (EPDM-Br) was produced by the reaction between the EPDM and N-bromosuccinimide(NBS), then the EPDM-g-PMMA was created by the ATRP of MMA initiated by EPDM-Br in the presence of CuBr/bpy at 90 degrees C. The study shows that the free radical transfer grafting polymerization does not existed in the ATRP of MMA initiated by allyl bromide/CuBr/bpy in the presence of pure EPDM. The propagation of the PMMA graft chains are in situ initiated by EPDM radicals which is created through the reaction between the EPDM-Br and CuBr. Moreover, the reaction conditions, such as solvent, reaction time, molar ratio of EPDM-Br : CuBr: bpy, were examined. The maximum graft efficiency(93%) was obtained at 90 degrees C for 20 h, when the ratio of EPDM-Br : CuBr : bpy was 1 : 0.8 : 2.4. The graft copolymers were characterized by solvent extraction. LR and H-1-NMR spectra technique. (C) 1999 Elsevier Science Ltd. All rights reserved.