Abstract:
Inclusion compound of deoxycholic acid (DCA) host molecule and vinyl chloride monomer (VCM) guest molecule is prepared from solvent free DCA crystal via a guest insertion technique. Solvent free DCA inclusion compound is achieved from a series of DCA-solvent guest, i.e., ethyl acetate, dioxane, and o-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 temperature of DCA-VCM is observed at ca. 40-60 °C. Inclusion polymerization is accomplished by the yradiation for a total dose of 2 Mrad, followed by post polymerization at –15 °C for two days. The obtained product is confirmed to be poly (vinyl chloride) by structural analysis. Glass transition temperature of the polymer is 8-10 °C higher than the commercial polymer, while characteristic IR band in the at 1500-1100 cm-1 region show sharp peaks reflecting the stereoregularity portion in the polymer chain.
