Vinyl Copolymerization. I. Copolymerization of Acrylonitrile with Methyl Methacrylate

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Abstract
Rates of copolymerization, of AN-MM for various mixing ratios of the two monomers were measured by the thermistor method. The heat of copolymerization, which was obtained by comparing the results of the thermistor method with those of the usual analytical method, agrees very well with Alfrey’s equation. Also, the non-constancy of φ can be explained by Arlman’s theory. It is concluded that the termination constants for mixed radicals are larger than those homogenous radicals and, furthermore, that the rate constant for a normal cross-termination reaction is about ten times as large as that of the cross-termination reaction having a penultimate unit.

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