Abstract
AbstractA film, prepared from the copolymer of vinylidene cyanide/vinyl acetate, was stretched at 145°C. in a silicone oil bath using a draw ratio of one to three. The x‐ray diffraction data indicated that some orientation had occurred during the stretching process. In the stretched film the copolymer chains are separated by a distance of 5.86 A. This lateral chain spacing lies between those values reported for Orlon and polyvinyl acetate. Along the fiber axis of the vinylidene cyanide/vinyl acetate copolymer film, a high degree of disorder exists. As the temperature of stretching decreased from 165 to 145°C., the degree of orientation increased slightly. Amorphous patterns were observed for the films which were stretched in air immediately after being removed from oil baths at 187 and 220°C.
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