Complexation of the propagating chain-end in living cationic polymerization

M. Zsuga, T. Kelen, L. Balogh, I. Majoros

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Kinetics of polymerization has been studied in the system isobutylene/dicumylmethylether/BCl3 (CH2Cl2, -80°C) in the presence of dimethyl sulphoxide added as electron donor in a broad concentration range. The apparent propagation rate constant showed a DMSO concentration dependence typical for complex equilibria. At a given DMSO concentration, the apparent rate constant decreases with increasing initial monomer concentration showing a seemingly zero-order propagation. A possible explanation of this phenomenon is the formation of a chain-end/monomer complex. Equilibrium and propagation rate constants have been determined.

Original languageEnglish
Pages (from-to)127-134
Number of pages8
JournalPolymer Bulletin
Volume29
Issue number1-2
DOIs
Publication statusPublished - Aug 1 1992

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ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Polymers and Plastics
  • Materials Chemistry

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