The effect of syndiotacticity of the structure and properties of dehydrochlorinated poly(vinyl chloride) films

摘要

AbstractThe dehydrochlorination of a syndiotacticity‐enriched poly(vinyl chloride) (s‐PVC) gave polyene materials and the structure and properties of dehydrochlorinated specimens were studied. The results were compared with those obtained for polyene materials formed from a commercial poly(vinyl chloride) (c‐PVC). The crystallinity of the s‐PVC was higher than that of the c‐PVC as revealed by the infrared analysis and X‐ray diffraction studies. The dehydrochlorinated specimens from the s‐PVC were crystalline to some extent while those from the c‐PVC were amorphous. The molecular orientation in the original films was preserved in the dehydrochlorinated specimens. The polyene films from the s‐PVC had larger conductivities and showed better doping properties as compared with those from the c‐PVC. These results were explained in terms of the larger crystallinity and the increased structural regularity of the s‐PVC as compared wi