Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 25, Issue 15, Pages 1376-1381Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200400204
Keywords
high pressure; kinetics (polym.); living/controlled free-radical polymerization; molecular weight distribution/molar mass distribution; reversible addition fragmentation chain transfer (RAFT)
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Application of high pressure, up to 2 500 bar, in cumyl dithiobenzoate-mediated styrene reversible addition fragmentation chain transfer (RAFT) polymerizations was found to be extremely advantageous with respect to both rate and control of polymerization. The overall rate of polymerization could be increased by a factor of approximately 3 with, e.g., at 23% conversion, concomitantly reducing the polydispersity indices from 1.35 to 1.10. No significant effect of increased pressure on the rate retardation effect was found.
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