ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Emulsion copolymerization of acrylonitrile and butyl acrylate. 6. Effect of free-radical desorption on the polymerization process
Polymer Institute, Centre for Chemical Research,
Slovak Academy of Sciences, CS-842 36 Bratislava
Abstract: This paper shows that the Smith—Ewart kinetic model developed so far
for emulsion polymerization of water-insoluble monomer is applicable to
the prediction of the average number of radicals per particle. The classical
model is not applicable for emulsion copolymerization of monomers highly
soluble in water to the prediction of kinetic parameters. It is reported that
the radical desorption is governed by the chain transfer step and the copolymerization process is significantly influenced by the desorption of oligomer
The equilibrium monomer concentration within monomer swollen polymer particles is constant and independent of the emulsifier concentration
and increases with increasing acrylonitrile content in the monomer feed.
The average number of radicals per particle is estimated to increase with
decreasing emulsifier concentration and butyl acrylate content in the feed.
In the presence of a radical scavenger low values of both the radical concentration and the average number of radicals per particle are estimated.
Full paper in Portable Document Format: 416a815.pdf
Chemical Papers 41 (6) 815–825 (1987)
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