Variation of the propagation rate coefficient with pressure and temperature in the free-radical bulk polymerization of styrene
β Scribed by Michael Buback; Frank-Dieter Kuchta
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 530 KB
- Volume
- 196
- Category
- Article
- ISSN
- 1022-1352
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β¦ Synopsis
Abstract
The propagation rate coefficient K~p~ of the freeβradical bulk polymerization of styrene is determined between 30 and 90Β°C up to a maximum pressure of 2800 bar. The data from pulsedlaser polymerizations and product analyses by gelβpermeation chromatography (PLPβGPC) are adequately represented by the expression:
The conseaquences of deducing activation volumes and activation energies from k~p~/(L Β· mol^β1^ Β· s^β1^) or from__k__*~p~/(kg Β· mol^β1^ Β·. S^β1^) are outlined.
π SIMILAR VOLUMES
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The propagation rate coefficient k, for the free-radical polymerization of 1,3-butadiene was determined as a function of temperature in the range of 30-60Β°C in bulk and as a function of the concentration of 1,3-butadiene in chlorobenzene at 50Β°C using a combination of a UV flash-lamp induced polymer
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