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  • 09월 06일 15시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제112회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Preparation and Characterization of Ophthalmic Lenses Containing 4-vinylanisole in the presence of nanodiamond particles

2013년 8월 29일 17시 31분 44초
IND.P-85 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 16일 (수요일) 16:00~19:00
저자 및
이민제, 김동현, 성아영*
세한대학교 안경광학과, Korea

The major physical characteristics of macromolecules used in hydrogel ophthalmic contact lenses include tensile strength, refractive index, optical transmittance, surface hydrophilic or wettability, water content, permeability to oxygen and carbon dioxide, physical and chemical stability, biocompatibility and mechanical properties. High functional ophthalmic lens materials, poly(HEMA-co-MMA)s was prepared by the copolymerization of HEMA, MMA, NVP and 4-vinylanisole in the presence of nanodiamond particles. Nanodiamond particles have high tensile strength and 4-vinylanisole has high refractive index and UV block effect of ophthalmic hydrogel lenses. Ophthalmic lenses of all combinations showed flexible and soft characteristics after being hydrated for 24 hrs in standard saline solution. For 4VA-1~10ND samples to which 4-vinylanisole and nanodiamond particles were added to the Ref._ combination, the transmittance for visible ray, UV-B and UV-A were in the range of 85.4~86.0%, 58.2~76.8%, and 25.0~68.4%, respectively. The pale grey transparent macromolecules exhibited low optical transmittance for wavelengths between 320 nm and 380 nm. The water contents were in the range of 27.80~37.29%, and the refractive index was measured to be in the range of 1.440~1.481. Meanwhile, the tensile strength ranged from 0.4210 to 1.1815 Kgf increased with increasing the addition ratio of nanodiamond. (Fig.1) The polymeric materials satisfied the basic characteristics required for ophthalmic hydrogel lenses. The produced polymers have excellent tensile strength, indicating that the material can be used to fabricate high durability hydrogel ophthalmic lenses with UV blocking effect.