Easy access to chain-length-dependent termination rate coefficients using RAFT polymerization

Philipp Vana, Thomas P. Davis, Christopher Barner-Kowollik

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103 Citations (Scopus)

Abstract

Chain-length-dependent termination rate coefficients of the bulk free-radical polymerization of styrene at 80 °C are determined by combining online polymerization rate measurements (DSC) with living RAFT polymerizations. Full kt versus chain-length plots were obtained indicating a high kt value for short chains (2 × 109 L · mol-1 · s-1) and a weak chain-length dependence between 10 and 100 monomer units, quantified by an exponent of -0.14 in the corresponding power law (kti,i) = kt0 · P-b.

Original languageEnglish
Pages (from-to)952-956
Number of pages5
JournalMacromolecular Rapid Communications
Volume23
Issue number16
DOIs
Publication statusPublished - 25 Nov 2002
Externally publishedYes

Keywords

  • Differential scanning calorimetry (DSC)
  • Kinetics (polym.)
  • Living polymerization
  • Reversible addition/fragmentation chain-transfer free radical polymerization (RAFT)
  • Termination rate coefficient

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