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Physical Properties Assessment of Soft Contact Lens with Halogen and Carboxylic Substituted Pyridine as Additive
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 Title & Authors
Physical Properties Assessment of Soft Contact Lens with Halogen and Carboxylic Substituted Pyridine as Additive
Kim, Duck-Hyun; Sung, A-Young;
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Purpose: This study evaluated the optical and physical and characteristics of soft contact lens polymerized with addition of 3-chloropyridine-4-carboxylic acid and 3-fluoropyridine-4-carboxylic acid in the basic hydrogel contact lens material. In particular, the utility of 3-chloropyridine-4-carboxylic acid and 3-fluoropyridine- 4-carboxylic acid as a hydrogel contact lens material was investigated. Methods: In this study, 3-chloropyridine-4-carboxylic acid and 3-fluoropyridine-4-carboxylic acid were used as additives. Also, 2-hydroxyethyl methacrylate, acrylic acid, methyl methacrylate and a cross-linker EGDMA were co-polymerized in the presence of AIBN as an initiator. Results: The physical properties of the produced polymers were measured as followings. The water content of 34.54~37.15%, refractive index of 1.4320~1.4342, tensile strength of 0.2872~0.3608 kgf and contact angle of , UV-B transmittance of 76.8~82.4% and UV-A transmittance of 84.6~86.6% were obtained respectively. Conclusions: Based on the results of this study, contact lens material containing 3-chloropyridine-4-carboxylic acid and 3-fluoropyridine-4-carboxylic acid is expected to be able to used as a material for high wettability and UV-block hydrogel contact lens.
3-Chloropyridine-4-carboxylic acid;3-Fluoropyridine-4-carboxylic acid;Wettability;UV-block;
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Protein Absorption and Characterization of Hydrogel Polymer Containing 2-Methacryloyloxyethyl Phosphorylcholine as Additive, Journal of the Chosun Natural Science, 2016, 9, 4, 249  crossref(new windwow)
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