Citation: . SYNTHESIS OF POLY(METHYL METHACRYLATE)-graft-POLYSTYRENE BY ATOM TRANSFER RADICAL POLYMERIZATION*[J]. Chinese Journal of Polymer Science, ;2003, 21(4): 427-431. shu

SYNTHESIS OF POLY(METHYL METHACRYLATE)-graft-POLYSTYRENE BY ATOM TRANSFER RADICAL POLYMERIZATION*

Received Date: 9 July 2002
Revised Date: 24 October 2002

The radical copolymerization of methyl methacrylate and 2-hydroxyethyl methacrylate was carried out via atomtransfer radical polymerization (ATRP) initiated by ethyl 2-bromoisobutyrate and catalyzed by CuBr/2,2'-bipyridinecomplex. This polymerization proceeds in a living fashion with controlled molecular weight and low polydispersity. Theobtained copolymer was esterified with 2-bromoisobutylryl bromide yielding a macroinitiator, poly(methyl methacrylate-co-2-hydroxyethyl methacrylate-co-2-(2-bromoisobutyryloxy)ethyl methacrylate),and its structure was characterized by 1H-NMR.This macroinitiator was used for ATRP of styrene to synthesize poly(methyl methacrylate)-graft-polystyrene.The molecular weight of graft copolymer increased with the monomer conversion,and the polydispersity remained relatively low.The individual grafted polystyrene chains were eleaved from the macroinitiator backbone by hydrolysis and the hydrolyzed product was characterized by 1H-NMR and GPC.
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