부산대학교 도서관

A novel UV-curable rosin-based resin, named as DHTM, was synthesized through a Michael addition reaction involving a derivative of natural rosin (dehydroabietylamine, DHAA) and trimethylolpropane triacrylate (TMPTA). The reaction, conducted at a low temperature (50 °C) without solvents, achieved a high conversion rate exceeding 95%. Structural analyses via Fourier transform infrared (FTIR), nuclear magnetic resonance (1H NMR), and liquid chromatography-orthogonal time-of-flight mass spectrometry (LC-OTOF-MS) confirmed the chemical composition of DHTM. Subsequently, a multifunctional UV resin was formulated by combining DHTM with the diluent 4-acryloylmorpholine (ACMO) and cured under UV light. The resulting resin exhibited excellent thermal, mechanical, and microscopic properties, including notable crosslinking density, tensile strength, and adhesion. The addition of ACMO contributed to a smoother resin surface, achieving a higher crosslinking density of 57.04 × 103 mol/m3. In conclusion, the developed UV-curable rosin-based resins exhibit significant potential for applications in UV-curable materials, such as 3D printing and coatings.Graphical Abstract: