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Fundamentals of RAFT Miniemulsion Polymerization Kinetics
Authors:Hidetaka Tobita
Affiliation:Department of Materials Science and Engineering, University of Fukui, 3-9-1 Bunkyo, Fukui 910-8507, Japan
Abstract:Summary: The polymerization rate of RAFT-mediated miniemulsion polymerization, in which the time fraction of active radical ϕA is larger than a few percent, basically increases with reducing the particle size. For smaller particle sizes, however, the statistical variation of monomer concentration among particles may slow down the polymerization rate. The rate retardation by increasing the RAFT concentration occurs with or without the intermediate termination in a zero-one system. According to the present theoretical investigation, smaller particles are advantageous in implementing a faster polymerization rate, a narrower MWD, and a smaller number of dead polymer chains.
Keywords:kinetics (polym.)  miniemulsion polymerization  molecular weight distribution/molar mass distribution  particle size  reversible addition fragmentation chain transfer (RAFT)
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