SHAPE MEMORY POLYMERS BASED ON SEMICRYSTALLINE THERMOPLASTIC POLYURETHANES BEARING NANOSTRUCTURED HARD SEGMENTS

摘要

Thermoplastic polyurethanes having an alternating sequence of hard and softsegments in which a nanostructured polyhedral oligomeric silsesquioxane diolis used as a chain extender to form a crystalline hard segment constitutingSMPs. The polyurethanes are formed by reacting a polyol, a chain extenderdihydroxyl-terminated POSS and a diisocyanate. The polyurethanes have multipleapplications including for example, important for human health care, drugdelivery matrices, superabsorbant hydrogels, coatings, adhesives, temperatureand moisture sensors, etc.