광반응성 아크릴레이트 및 메타아크릴레이트 단량체의 구조와 분자량에 따른 자외선 경화 필름의 특성 변화 = Characteristic Variation of Ultraviolet-Cured Films on Structures and Molecular Weights of Photo-Reactive Acrylate and Methacrylate Monomers

다국어 초록 (Multilingual Abstract)

Preliminary research on the composition and physical properties of synthetic materials is essential in the development stage of ultraviolet (UV)-cured films with excellent performance and productivity. In this study, a bifunctional urethane acrylate oligomer was synthesized by reacting polycarbonate diol with isophorone diisocyanate, and a photoinitiator was mixed with bifunctional acrylate and methacrylate monomers of various molecular weights to prepare an UV curable coating solution and UV-cured films. UV curing behavior of UV curable coating solution, thermo-mechanical properties, tensile strength and elongation of UV-cured films were evaluated on types of bifunctional acrylate-based monomers. It was confirmed that the curing rate and thermo-mechanical properties were improved as the bifunctional methacrylate monomer and the smaller molecular weight of each monomer than the bifunctional acrylate monomer. And the correlation was summarized through rubber elasticity theory.