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KMID : 1059520170610030097
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Journal of the Korean Chemical Society
2017 Volume.61 No. 3 p.97 ~ p.103
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The Performance Stability of Ophthalmic Material with UV-Block Effect Containing Hydroxyl Benzophenone Group and Tungsten Nanoparticles
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Kim Duck-Hyun
Sung A-Young
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Abstract
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In this study, the functional hydrogel ophthalmic lens containing tungsten oxide nanoparticles, 2,4-dihydroxy benzophenone and 2-hydroxy-4-(methacryloyloxy) benzophenone were manufactured. HEMA (2-hydroxyethyl methacrylate), MMA (methyl methacrylate), AA(acrylic acid), the cross-linker EGDMA (ethylene glycol dimethacrylate), the initiator AIBN (azobisisobutyronitrile) and the functional additives including tungsten oxide nanoparticles, 2,4-dihydroxy benzophenone, and 2-hydroxy-4-(methacryloyloxy) benzophenone were used respectively. The measurements of water content and refractive index of the sample was decreased and increased, respectively. And also, the UV transmittance of produced lens containing 2,4-dihydroxy benzophenone, 2-hydroxy-4-(methacryloyloxy) benzophenone and tungsten oxide nanoparticles was measured. Based on the results of this study, it is judged that the performance improvement increased over time when 2-hydroxy-4-(methacryloyloxy) benzophenone was used as an additive, while the use of tungsten oxide nanoparticles influenced on blue-ray-blocking effect of the hydrophilic lens.
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KEYWORD
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2,4-Dihydroxy benzophenone, 2-Hydroxy-4-(methacryloyloxy) benzophenone, Nano particle, Tungsten oxide, UV-Block
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