Synthesis of poly(methyl methacrylate)-b-poly(vinyl chloride)-b-poly(methyl methacrylate) block copolymers by CuCl/2,2′-bipyridine-catalyzed living radical block copolymerization initiated from α,ω-Di(iodo)poly(vinyl chloride) prepared by single-electron-transfer/degenerative-chain-transfer mediated living radical polymerization

被引:46
作者
Percec, V [1 ]
Guliashvili, T [1 ]
Popov, AV [1 ]
Ramirez-Castillo, E [1 ]
机构
[1] Univ Penn, Dept Chem, Roy & Diana Vagelos Labs, Philadelphia, PA 19104 USA
关键词
block copolymers; living polymerization; poly(methyl methacrylate); poly(vinyl chloride) (PVC); radical polymerization;
D O I
10.1002/pola.20604
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
alpha,omega-Di(iodo)poly(vinyl chloride)s with number-average molecular weights (M-n's) of 2100-29,800 and weight-average molecular weight/number-average molecular weight (M-w/M-n) ratios of 1.66-2.16 were synthesized by the single-electron-transfer/degenerative-chain-transfer mediated living radical polymerization of vinyl chloride initiated with CHI3 and catalyzed by Na2S2O4. These alpha,omega-di(iodo)poly(vinyl chloride)s were used as initiators for the metal-catalyzed living radical block copolymerization of methyl methacrylate mediated by CuCl/2,2 '-bipyridine. Poly(methyl methaerylate)-b-poly(vinyl chloride)-b-poly(methyl methacrylate) block copolymers with M. values of 36,500-95,700 and M-w/M-n values lower than 1.20 were synthesized by this novel and general synthetic method. (c) 2005 Wiley Periodicals, Inc.
引用
收藏
页码:1478 / 1486
页数:9
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