The Polymer Society of Korea

Abstract

In this study, highly stretchable low covered movable slide-ring polymer gel was synthesized by crosslinking with diisocyanate and poly (propylene glycol)-methyl-β-cyclodextrin polyrotaxane. Low covered polyrotaxane was synthesized from methyl-β-cyclodextrin (Me-β-CD) and poly (propylene glycol) (PPG) with a molecular weight of 1000 and expected to have higher elongation properties than full covered polyrotaxane because of easier movement of ring structure along the main chain. The slide ring movement of crosslinked Me-β-CD on polyurethane backbone allows it to stretch without deformation. These unique properties of the resulting gels potentially act as flexible materials and create new opportunities for biomedical applications. The low covered polyrotaxane and polyurethane were characterized by FT-IR, 1H-NMR and UV-vis spectroscopies. In addition, the elongation of polyurethane according to the content of polyrotaxane was shown through tensile strength measurement.