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

Junkers, T., Voll, D., & Barner-Kowollik, C. (2009) Determination of vinyl acetate propagation rate coefficients via high frequency pulsed laser polymerization. E-Polymers.

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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.

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ID Code: 99220
Item Type: Journal Article
Refereed: Yes
Additional Information: Export Date: 5 September 2016
Correspondence Address: Junkers, T.; Preparative Macromolecular Chemistry, Universität Karlsruhe, Karlsruhe Institute of Technology (KIT), Engesserstr. 18, 76128 Karlsruhe, Germany; email: thomas.junkers@polymer.uni-karlsruhe.de
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Keywords: Critically evaluated rate coefficients, Free-radical polymerization, Kinetics (polymerization), Propagation rate coefficient, Pulsed laser polymerization, Vinyl acetate, Atom transfer radical polymerization, Chromatographic analysis, Lasers, Polymers, Polyvinyl acetates, Pulsed laser applications, Size exclusion chromatography, Free radical polymerization
ISSN: 16187229
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 22 Sep 2016 04:50
Last Modified: 10 Oct 2016 00:51

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