Synthesis of graft copolymer by coupling reaction of living poly(methyl methacrylate) with bromomethylated polystyrene
作者： Zou Yousi , Lin Donghai , Dai Lizong , Zhang Jinghui
DOI: 10.1016/S0032-3861(97)00572-7
关键词: Side chain 、 Polymer 、 Anionic addition polymerization 、 Molar mass distribution 、 Polystyrene 、 Copolymer 、 Poly(methyl methacrylate) 、 Polymerization 、 Polymer chemistry 、 Materials science
摘要: Abstract A novel, well-defined graft copolymer (polystyrene (PS)-g-poly(metthyl methacrylate) (PMMA)) with control over the length of both backbone and side chain was synthesized by coupling reaction living PMMA bromomethylated PS. The polymer prepared anionic polymerization styrene n -butyllithium followed bromomethylation using C 8 H 17 OCH 2 Br/SnCl 4 . group transfer MMA. Graft copolymers a narrow molecular weight distribution, D = 1.2 ∼ 1.4 at an M ¯ around 3 × 10 −7 were obtained. reactivity PS decreased increase in their weight; favoured temperature −20°C. Characterization product performed methods including 1 n.m.r., g.p.c. d.s.c.. Compared homopolymers PMMA, had lower glass transition temperature.
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