논문 상세보기
pp.459-467
본 연구는 소프트 콘택트렌즈의 주된 재료인 HEMA(2-hydroxyethyl metacrylate)와 유연성을 갖게 하는 BMA(butyl methacrylate), 친수성의 acrylate를 포함한 silicone polyether acrylate등을 사용하여 콘택트렌즈 재료를 중합하였다. 사용된 각각의 단위체들을 다른 비율로 조합하여 열중합하였으며, 제조된 콘택트렌즈 sample은 하루 동안 수화시킨 후 팽윤율 (swelling ratio) 및 함수율(water content), 광투과율(optical transmittance) 과 인장강도(ultimate strength) 등의 평균값을 비교 분석하였다. HEMA 중합의 경우 팽윤율과 함수율은 각각 20.09%와 29.99%로 나타났으며, 광투과율은 90.60%, 인장강도 0.145 kgf로 나타났다. HEMA/Silicone(0.2%~11.5%) 중합에서는 silicone의 비율이 증가할수록 함수율과 팽윤율이 증가하는 경향을 나타내었으며 인장강도는 감소하는 경향을 나타내었다. BMA를 일정하게 첨가한 HEMA/Silicone(0.2%~11.5%)/ BMA 중합에서는 BMA의 양이 감소함에 따라 함수율과 팽윤율이 상대적으로 증가하는 경향을 나타내었다. 인장강도 또한 점차적으로 감소하는 경향을 나타내었다.
In this study, we polymerized contact lens materials using monomers HEMA (2-hydroxyethyl methacrylate) which is known as a main material of soft contact lens, BMA(butyl methacrylate) for flexibility, MMA(methyl methacrylate) for stability, the silicone polyether acrylate with acrylate for hydrophilic material. We prepared monomers with different composition percents for our experiment. Contact lens were fabricated by thermal polymerization. And then samples were hydrated for one day. We showed results by using average value of physical property of each sample and analyzed swelling ratio, water content, optical transmittance and ultimate strength of contact lenses which were fabricated. In the composition of HEMA, swelling ratio and water contents of samples showed each 20.09% and 29.99%. Optical transmittance and ultimate strength of samples showed each 90.60% and 0.145 kgf. In the composition of HEMA/Silicone(0.2%~11.5%), swelling ratio and water content of values increased with increase of silicone percent. A ultimate strength values decreased gradually. In the composition of HEMA/Silicone/BMA, the composition percents of silicone were ranged from 0.2% to 11.5% and the composition percent of BMA(butyl methacrylate) was 5.15%. Swelling ratio and water contents increased with decrease of BMA(butyl methacrylate) percent. Also, ultimate strength values decreased gradually.
