Determination of vinyl acetate propagation rate coefficients via high frequency pulsed laser polymerization

Thomas Junkers, Dominik Voll, Christopher Barner-Kowollik

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5 Citations (Scopus)

Abstract

New data on the propagation rate coefficient, k p, of vinyl acetate (VAc) are obtained via the IUPAC recommended method of pulsed laser polymerization size exclusion chromatography (PLP-SEC) operated at 500 Hz laser repetition rate. An apparent dependency of the experiment's outcome on the laser pulsing rate Is identified with k p being about 25 % larger at 500 Hz compared to 100 Hz. The temperature dependence of kp was determined to fit In k p = 17.12 - 2621 K/T; data Is in generally good agreement with literature values when the previous underestimation of k p by 100 Hz laser pulsing experiments is taken Into account.

Original languageEnglish
Article number76
Journale-Polymers
Publication statusPublished - 6 Jan 2009
Externally publishedYes

Keywords

  • Critically evaluated rate coefficients
  • Free-radical polymerization
  • Kinetics (polymerization)
  • Propagation rate coefficient
  • Pulsed laser polymerization
  • Vinyl acetate

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