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.
|Publication status||Published - 6 Jan 2009|
- Critically evaluated rate coefficients
- Free-radical polymerization
- Kinetics (polymerization)
- Propagation rate coefficient
- Pulsed laser polymerization
- Vinyl acetate