Se-Young Park, Min-Jae Lee, A. Sung
Mar 30, 2015
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Abstract
AbstractThe physical and optical properties of polymers with 2-fluoroaniline and 4-fluoroaniline added, which can be used forhydrophilic ophthalmic lenses, were investigated in this study. The UV-blocking properties of 2- and 4-fluoroaniline werealso investigated by measuring their UV transmissibility. 2- and 4-Fluoroaniline were used as additives for the basiccombination of HEMA, 5% AA, and 1% MMA, and the materials were copolymerized with EGDMA as the cross-linkingagent and AIBN as the initiator. The refractive index, water content, optical transmittance, tensile strength, and contactangle were measured to evaluate the physical properties of the produced hydrogel lens. The measured physical propertiesof the hydrogel contact lens produced with the copolymerized polymer showed a refractive index of 1.425-1.436; a watercontent of 36.95-44.65%; a visual light transmittance of 66.0-81.0%; a tensile strength of 0.138-0.281 kgf; and a contactangle of 55.02-57.87 o . The UV transmissibility was significantly reduced, which indicates that 2-fluoroaniline and 4-fluoroaniline have UV-blocking properties. This study showed that 2- and 4-fluoroaniline are expected to be used as UV-blocking materials in hydrogel ophthalmic lenses whose physical properties, such as their refractive index and watercontent, do not change.Keywords: 2-Fluoroaniline, 4-Fluoroaniline, UV-blocking