Abstract
The copolymerization of vinyl chloride with acrylonitrile at low temperatures (mainly 5, -15, and-30°C) has been studied. The copolymers obtained were seemed to be fairly uniform in composition and molecular weight. The solubilities of these copolymers increased with the acrylonitrile content. Heat shrinkage of fibers and films made from these copolymers were lower than that of polyvinyl chloride and the other vinyl chloride copolymers obtained at the same temperatures.
The fairly large polarity of acrylonitrile unit in the copolymer chain is seemed to make this unit to be the centre of attractive force between the polymer chains. Although the orientation of polymer chains will be disturbed by these acrylonitrile unit, the attractive force between the chain by these units is seemed to overcome the disturvance.
The fibers prepared from these copolymers showed poor dyeability to water-soluble dyestaffs.
