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KMID : 1059520120560050597
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Journal of the Korean Chemical Society
2012 Volume.56 No. 5 p.597 ~ p.602
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Effect of Isocyanate Group on the Physical Properties of Hydrogel Contact Lenses Containing Silane
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Sung A-Young
Cho Seon-Ahr
Kim Tae-Hun
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Abstract
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The copolymerization of triacetoxyvinylsilane, EGDMA (ethylene glycol dimethacrylate as a cross-linker), HEMA (2-hydroxyethyl methacrylate), MMA (methyl methacrylate), MA (methacrylic acid) was performed in the presence of AIBN (2,2’-azobisisobutyronitrile) as an initiator. Measurement of the physical properties of the resulting copolymers showed that water content, refractive index, visible ray transmittance, and tensile strength were in the range of 35.63~32.44%, 1.4382~1.4480, 89.0~92.5% and 0.346~0.674 kgf, respectively. The values of tensile strength of copolymers-containing hexamethylene diisocyanate were higher than those of the copolymers containing triacetoxyvinylsilane. From the results we came to the conclusion that the produced copolymers are suitable for the application of ophthalmic contact lens with high tensile strength, wettability and duraility.
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KEYWORD
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Triacetoxyvinlysilane, Hexamethylene diisocyanate, Tensile strength
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