실험계획법을 이용한 자외선 경화형 콘택트렌즈의 배합 및 물성평가

Abstract

In this study, we report chemical composition effects of UV curable contact lenses containing self-photoinitiating silicone acrylate(SPISA) and hyperbranched acrylate(HBA). The effects of two variable: the concentration of self-photoinitiating silicone acrylate(SPISA) and hyperbranched acrylate(HBA) on the photopolymerization, water contents, water contact angle and tensile strength of UV curable contact lenses have been investigated using a full factorial experimental design. Photoinitiating behaviors of SPISA and HBA have been investigated by photo-differential scanning calorimeter(Photo-DSC). The results showed that the formulations containing SPISA and HBA can be improved curing properties although that were slowly cured. The results show that SPISA and HBA are the effective factors affecting conversion and water contents of UV cured contact lenses. As a result of statistical analysis, the UV cured contact lenses containing SPISA 8 wt% and HBA 3.5 wt% shows the best conversion, water contents, contact angle and tensile strength.