Methacrylate-functionalized oligomers based on lactide, ε-udcaprolactone and trimethylene carbonate for application inudstereo-lithography

摘要

Photo-curable biodegradable macromers were prepared by ring openingudpolymerization of D,L-lactide (DLLA), ε-caprolactone (CL) and 1,3-trimethyleneudcarbonate (TMC) in the presence of glycerol or sorbitol as initiator and stannous octoateudas catalyst, and subsequent methacrylation of the terminal hydroxyl groups. Theseudmethacrylated macromers, ranging in molecular weight from approximately 700 to 6000udg/mol, were cross-linked using ultraviolet (UV) light to form biodegradable networks.udHomogeneous networks with high gel contents were prepared. One of the resins basedudon PTMC was used to prepare three-dimensional structures by stereo-lithographyudusing a commercially available apparatus.