LAUSR

A new chemical architecture from abietic acid, consisting of a cycloaliphatic unsaturated terminal diisocyanate (AADI) structure, was synthesized and fully characterized. This is the first time that multiple shape recovery polyurethane (SMPU) network based on abietic acid has been reported. In this study, we designed an amorphous and biocompatible SMPU network system with adjustable cross-linking densities over a wide range using AADI. The SMPU network showed good shape memory properties with a shape fixing rate of greater than 98% and a shape recovery rate of 95%. In vitro hydrolytic biodegradation weight loss ratio of SMPUs reached 71% within 8 weeks. The physical properties of these SMPU's were comparable to what were reported for SMPU's obtained using petroleum-derived commercially available diisocyanates. These environmentally-friendly SMPUs displayed a wide range of physic-mechanical properties with promising hydrolytic degradability, showing good potential for practical applications.