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Copolymerization up to high conversions. III. Kinetic measurements of the copolymerization of acrylonitrile and α-methylstyrene

I. Capek, V. Juraničová, and J. Bartoň

Polymer Institute, Centre of Chemical Research, Slovak Academy of Sciences, CS-842 36 Bratislava

 

Abstract:  Conversion—time curves for the free-radical copolymerization of acry­ lonitrile (AN) and α-methylstyrene (aMS) in methyl ethyl ketone ([aMS]/[AN] = 0.1 and 0.5; total comonomer concentrations in methyl ethyl ketone: 10 mol dm-3 and 3 mol dm-3) at temperatures close to ceiling temper­ ature of a-methylstyrene are linear up to approximately 60 % of conversion. The gel effect is observed in the range 60—80 % of conversion. The initial copolymerization rates are functions of α-methylstyrene concentration in the feed; with increasing α-methylstyrene concentration the copolymerization rate decreases. The copolymer composition cannot be predicted on the basis of the Mayo—Lewis equation of copolymerization.

Full paper in Portable Document Format: 374a533.pdf

 

Chemical Papers 37 (4) 533–541 (1983)

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