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Improving Chain Transfer Agent Mass Transfer in the Semicontinuous Emulsion Copolymerization of Vinyl Acetate/Butyl Acrylate
Author(s) -
Zubitur M.,
Asua J. M.
Publication year - 2001
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/1439-2054(20010601)286:6<362::aid-mame362>3.0.co;2-h
Subject(s) - vinyl acetate , butyl acrylate , copolymer , transfer agent , emulsion polymerization , monomer , materials science , emulsion , acrylate , chain transfer , polymer chemistry , mass transfer , catalytic chain transfer , molar mass , chemical engineering , polymerization , polymer , radical polymerization , chemistry , chromatography , composite material , engineering
In this paper the conditions to improve the chain transfer agent (CTA) mass transfer in the semicontinuous emulsion polymerization of vinyl acetate/butyl acrylate were investigated. Experiments varying agitation speed and monomer feed type were carried out in order to determine the experimental conditions where an efficient mass transfer of the chain transfer agent was achieved without any deleterious side effect. It was found that the mass transport of CTA was quite efficient and in contrast with observations using less water‐soluble monomers and lower solid contents no significant effect of the agitation was observed. However, high agitation rates may cause coagulation.