Synthesis, Shape-Memory Functionality and Hydrolytical Degradation Studies on Polymer Networks from Poly(rac-lactide)-b-poly(propylene oxide)-b-poly(rac-lactide) dimethacrylates


  • This work was supported by the Bundesministerium für Bildung und Forschung (BioFuture award no. 0311867).


Amorphous, hydrolytically degradable, multi-phase block copolymer networks were obtained by photocrosslinking. The macrodimethacrylate precursors were prepared by ring-opening polymerisation (ROP). The aim of this investigation to tailor the materials' elasticity in the temporary shape could be achieved. Stress-controlled, cyclic thermomechanical tensile experiments showed the materials' excellent shape-memory properties with strain recovery rates up to 99 %. The presented amorphous, biodegradable polymer network system with shape-memory presents a new generation of multi-functional biomaterials enabling applications in keyhole surgery or controlled drug release.