Abstract:
Inclusion compound of deoxycholic acid (DCA) host molecule and vinyl chloride monomer (VCM) guest molecule is prepared from solvent free DCA crystal via guest insertion technique. Solvent free DCA inclusion compound is achieved from a series of DCA-solvent guest, i.e., ethylacetate, dioxane, o- and p-xylene. X-ray diffraction, FT-IR and thermal analysis results indicate that vinyl chloride monomer is entrapped and stabilized in DCA crystal in solvent free DCA. Guest releasing peak of DCA-VCM is confirmed at ca. 40-60 degree Celsius. Inclusion polymerization is accomplished from the [gamma]-radiation for total dose 20 KGy. Followed by post polymerization at – 15 degree Celsius for two days. The obtained product is confirmed to be polyvinyl chloride by structural analysis. Glass transition temperature of the obtained product is 8-10 degree Celsius higher than the commercial one, while characteristic peaks at 1500-1100 cm [subscript -1] studied by FT-IR show the sharp peaks of which imply that the obtained PVC contains stereoregularity portion in the polymer chain.
