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B. Thomalla, R. Wiśniewski


Effect of the reaction medium on the copolymerization of vinyl chloride and isobuylvinyether


Polimery 1983, No 10-11, 371



DOI: dx.doi.org/10.14314/polimery.1983.371

Summary

The course of the free—radical copolymerization of vinyl chloride with isobutylvinylether in bulk, in xylene solution and in emulsion has been investigated. The highest K-value of the copolymer has been obtained in the case of emulsion copolymerization. The vinyl chloride content in copolymer depends also on the method of copolymerization and under conditions of a specified composition of comonomers mixture in the reaction medium this content decreases in the followin g sequence: bulk > emulsion > solution. In this last method, an increase in the share of xy lene in the reaction mixture results in a decrease of yield and К -value of the copolymer and In a decrease of v iny l chloride content in it. The reactivity coefficients have been determined, they are: r1 = 0.31 ± 0.02 (isobutylvinylether) and r2 = 1.8 ± 0.1 (vinyl chloride).


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