Solvent-Free Three-Dimensional Printing of Biodegradable Elastomers Using Liquid Macrophotoinitiators

• DOI: 10.1021/acs.macromol.1c00856
• Publication Date: 2021-08-23T07:30:38Z
• Authors: Matthias Sandmeier; Nevena Paunović; Riccardo Conti; Leopold Hofmann; Jieping Wang; Zhi Luo; Kunal Masania; Na Wu; Nicole Kleger; Fergal Brian Coulter; André R. Studart; Hansjörg Grützmacher; Jean-Christophe L...; Yinyin Bao
• Keywords: Diluent

Vat photopolymerization 3D printing provides new opportunities for the fabrication of tissue scaffolds and medical devices. However, manufacturing biodegradable elastomers, it usually requires use organic solvents to dissolve solid photoinitators achieve low resin viscosity, making this process environmentally unfriendly not optimal biomedical applications. Here, we report solvent-free elastomers by digital light processing with well-defined photoinitiator–polymer conjugates. Being in liquid state at room temperature, macrophotoinitiators enabled high-quality absence any that are used printing. This allowed systematic investigation structure–property relationships 3D-printed without interference from reactive diluents. The developed were compatible various photopolymers could be applied shape-memory work offers perspectives additive bioresorbable implants other functional