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Abstract
Vat photopolymerization 3D printing provides new
opportunities for the fabrication of tissue scaffolds and medical
devices. However, it usually requires the use of organic solvents or
diluents to dissolve the solid photoinitators, making this process
environmentally unfriendly, and not optimal for biomedical
applications. Here, we report biodegradable liquid polymeric
photoinitiators for solvent-free 3D printing of biodegradable polymeric
materials by digital light processing. These photoinitiators enable
systematic investigation of structure-property relationship of 3D
printing polymeric materials without the interference from the reactive
diluents and offer new perspectives for the solvent-free 3D additive
manufacturing of bioresorbable medical implants as well as other
functional devices.
