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e-Polymers

Editor-in-Chief: Agarwal, Seema / Greiner, Andreas

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1618-7229
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Determination of vinyl acetate propagation rate coefficients via high frequency pulsed laser polymerization

Thomas Junkers
  • Preparative Macromolecular Chemistry, Universität Karlsruhe / Karlsruhe Institute of Technology (KIT), Engesserstr. 18, 76128 Karlsruhe; fax: +49 721 608-5740
  • :
/ Dominik Voll
  • Preparative Macromolecular Chemistry, Universität Karlsruhe / Karlsruhe Institute of Technology (KIT), Engesserstr. 18, 76128 Karlsruhe; fax: +49 721 608-5740
/ Christopher Barner-Kowollik
  • Preparative Macromolecular Chemistry, Universität Karlsruhe / Karlsruhe Institute of Technology (KIT), Engesserstr. 18, 76128 Karlsruhe; fax: +49 721 608-5740
  • :
Published Online: 2013-08-31 | DOI: https://doi.org/10.1515/epoly.2009.9.1.931

Abstract

New data on the propagation rate coefficient, kp, 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 kp being about 25 % larger at 500 Hz compared to 100 Hz. The temperature dependence of kp was determined to fit ln kp = 17.12 - 2621 K/T; data is in generally good agreement with literature values when the previous underestimation of kp by 100 Hz laser pulsing experiments is taken into account.

Keywords : Kinetics (polymerization); pulsed laser polymerization; vinyl acetate; propagation rate coefficient; free-radical polymerization; critically evaluated rate coefficients


Published Online: 2013-08-31

Published in Print: 2009-12-01


Citation Information: e-Polymers. Volume 9, Issue 1, Pages 931–938, ISSN (Online) 1618-7229, ISSN (Print) 2197-4586, DOI: https://doi.org/10.1515/epoly.2009.9.1.931, August 2013

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