POS4-0278
3D Printing Using Water-Dispersible Photoinitiators and Their Removal via Post-Processing
Topic
S4. Colloids, Interfaces, and Molecular Assemblies for Functional Soft Materials
When and Where
Sep 30, 2026
08:30 - 09:30
Room 301 (Grand Ballroom)
Session Chairs
Heesuk KIM
Jinhye BAE
Presenter(s)
Jae Hyeon Heo (Kumoh National Institute of Technology)
Co-Author(s)
Abstract
Water-compatible photoinitiators for hydrogel 3D printing are often expensive and may leave residual species that limit biomedical applications. In this study, water-dispersible photoinitiator particles were prepared through a simple emulsification–drying process and applied to digital light processing (DLP) 3D printing. By optimizing the photoinitiator and surfactant composition, stable particles suitable for aqueous resins were obtained, enabling successful fabrication of double-network hydrogel structures.
To improve biocompatibility, residual photoinitiator particles were removed through a post-processing washing procedure. The treatment significantly improved cytocompatibility while maintaining the tensile strength and elongation of the printed structures. These results demonstrate a simple and cost-effective strategy for hydrogel 3D printing with enhanced biomedical applicability.
To improve biocompatibility, residual photoinitiator particles were removed through a post-processing washing procedure. The treatment significantly improved cytocompatibility while maintaining the tensile strength and elongation of the printed structures. These results demonstrate a simple and cost-effective strategy for hydrogel 3D printing with enhanced biomedical applicability.
