Degradability of cross-linked polyurethanes/chitosan composites

摘要

Polyurethanes with synthetic poly([R,S]-3-hydroxybutyrate) in the soft segment and with\udpolycaprolactone triol as cross-linker were blended with chitosan and degraded in hydrolytic and oxidative\udsolutions. Progress of the degradation of the samples was evaluated by changes in their weight,\udsurface topography and thermal properties. Increasing the poly([R,S]-3-hydroxybutyrate) content in soft\udsegment as well as blending with chitosan resulted in an increase in degradability of cross-linked polyurethanes\udin both solutions.