THERMOANALYTICAL STUDY OF ACRYLONITRILE-VINYLIDENE CHLORIDE COPOLYMERS

Thermal degradation of emulsion statistical copolymers of acrylonitril e and vinylidene chloride and/or terpolymers with glycidyl methacrylat e or glycidyl acrylate was carried out in the temperature range from 2 5 to 450-degrees-C in nitrogen and was studied by conductometry and by gas chromatography. We have found that epoxy groups of the third comp onent of terpolymers favourably affect the beginning of dehydrochlorin ation because they bind the first amounts of the releasing hydrogen ch loride. With decreasing molecular mass of a sample, the rate of the HC l abstraction considerably increases. With samples of the lowest molec ular masses, almost complete dehydrochlorination occurs.