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Synthesis and characterization of poly(methyl methacrylate)-block-poly(methylphenylsilane)-block-poly(methyl methacrylate) by atom transfer radical polymerization

By Nicholas A. A. Rossi, Richard G. Jones and Simon J. Holder

Abstract

ABA block copolymers of methyl methacrylate and methylpherylsilane were synthesized with a methodology based on atom transfer radical polymerization (ATRP). The reaction of samples of alpha,omega-dihalopoly(methylphenylsilane) with 2-hydroxyethyl-2-methyl-2-bromoproprionate gave suitable macroinitiators for the ATRP of methyl methacrylate. The latter procedure was carried out at 95 degreesC in a xylene solution with CuBr and 2,2-bipyridine as the initiating system. The rate of the polymerization was first-order with respect to monomer conversion. The block copolymers were characterized with H-1 NMR and C-13 NMR spectroscopy and size exclusion chromatography, and differential scanning calorimetry was used to obtain preliminary evidence of phase separation in the copolymer products. (C) 2002 Wiley Periodicals, Inc

Topics: QD
Publisher: Wiley Online Library
Year: 2003
OAI identifier: oai:kar.kent.ac.uk:2567
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