Importance of active-site reactivity and reaction conditions in the preparation of hyperbranched polymers by self-condensing vinyl polymerization: Highly branched vs. linear poly[4-(chloromethyl)styrene] by metal-catalyzed `living' radical polymerization

Marc W. Weimer*, Jean M.J. Frechet, Ivan Gitsov

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

271 Scopus citations

Abstract

The self-condensing vinyl polymerization of 4-(chloromethyl)styrene using metal-catalyzed living radical polymerization catalyzed by CuCl/2,2′-bipyridyl was studied. Polymers with weight average molecular weights between 3×103 and 1.6×105 and different extents of branching were characterized by size exclusion chromatography, light scattering and nuclear magnetic resonance spectroscopy. The weight suggested that, at a catalyst to monomer ratio of 0.01, an almost linear polymer was obtained while a high catalyst to monomer ratio favored the formation of a branched structure.

Original languageEnglish (US)
Pages (from-to)955-970
Number of pages16
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume36
Issue number6
DOIs
StatePublished - Jan 1 1998

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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