| 초록 |
Acrylic functionalized urethane prepolymer series of various compositions were designed with high biocompatibility by cytotoxicity evaluation with polyethylene glycol (PEG) and hexamethylene diisocyanate (HDI). After that, acryl-urethane resin (AU) was synthesized by attaching 2-hydroxyethyl-methacrylate (2-HEMA) and used for digital light processing (DLP) 3D printing by adding photo-initiator and additive acrylate. When the acryl-urethane resin/base acrylate ratio was 1/9, the UV cured acryl-polyurethane (APU) formulations had the excellent mechanical properties and highest resolution. The materials were characterized by Fourier transform infrared (FT-IR) spectroscopy, UV absorbance, viscous properties, optical microscope, field emission scanning electron microscopy (FE-SEM), mechanical properties, and cell viability method. Overall, this UV-curable AU resin can be a promising prepolymer for the DLP printing of flexible photo-resin for biocompatible and photo-curable applications. |
