This article reviews the degradability of chemically synthesized bioelastomers, mainly designed for soft tissue repair. These bioelastomers involve biodegradable polyurethanes, polyphosphazenes, linear and crosslinked poly(ether/ester)s, poly(epsilon-caprolactone) copolymers, poly(1,3-trimethylene carbonate) and their copolymers, poly(polyol sebacate)s, poly(diol-citrates) and poly(ester amide)s. The in vitro and in vivo degradation mechanisms and impact factors influencing degradation behaviors are discussed. In addition, the molecular designs, synthesis methods, structure properties, mechanical properties, biocompatibility and potential applications of these bioelastomers were also presented.
Keywords: biocompatible; biodegradable; bioelastomer; poly(1, 3-trimethylene carbonate); poly(diol-citrates); poly(ester amide)s; poly(ether ester); poly(polyol sebacate)s; poly(ε-caprolactone); polyphosphazenes; polyurethanes.