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Branching and crosslinking in emulsion polymerization
Author(s) -
BouvierFontes Ludivine,
Pirri Rosangela,
Arzamendi Gurutze,
Asua José M.,
Leiza Jose R.
Publication year - 2004
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200450212
Subject(s) - branching (polymer chemistry) , potassium persulfate , emulsion polymerization , polymer chemistry , polymerization , acrylate , kinetics , materials science , butyl acrylate , emulsion , polymer , chemical engineering , methyl methacrylate , chemistry , organic chemistry , copolymer , composite material , engineering , physics , quantum mechanics
The seeded semibatch emulsion polymerization of butyl acrylate (BA) with allyl methacrylate (AMA) and butanediol diacrylate (BDA) was used to study the influence of the crosslinkers on the kinetics, branching and crosslinking density, gel fraction and sol MWD produced during the experiments carried out at 80°C using potassium persulfate as initiator. Surprisingly, the most reactive crosslinker, BDA, produced the less crosslinked, branched and gel containing polymer. These results were explained with the help of a mathematical model in terms of cyclization reactions and diffusion controlled propagation and termination reactions.