The use of 3D printing of hydrogels as a cell support in bio-printing of cartilage, organs and tissue has attracted much research interest. For cartilage applications, hydrogels as soft materials must show some degree of rigidity, which can be achieved by photo- or chemical polymerization. In this work, we combined chemical and UV laser polymeric cross-linkage to control the mechanical properties of 3D printed hydrogel blends. Since there are few studies on UV laser cross-linking combined with 3D printing of hydrogels, the work here reported offered many challenges.
Cristovão, A. F., Sousa, D. M., Silvestre, F., Ropio, I., Gaspar, A., Henriques, C. M. R., Velhinho, A., Baptista, A. C. B., Faustino, M. M., & Ferreira, I. (2019). Customized tracheal design using 3D printing of a polymer hydrogel: influence of UV laser cross-linking on mechanical properties. 3D Printing in Medicine, 5(12). https://doi.org/10.1186/s41205-019-0049-8