논문 상세보기
pp.199-208
Purpose : In this study. we compared the UV absorbance of the produced polymer containing the benzophenone group with previous materials and measured the physical properties of the produced contact Jens in order to investigate whether the materia! is suitable for contact lens materials. Methods The crosslinking agent EGDMA and UV-absorbents (2-hydroxy-4-methoxy-benzophenone, 2.4-dihydroxy- benzophenone) were mixed with a certain amount of HEMA. NVP and other raw materials and the mixture were polymerized and measured for physical properties and UV-blocking performance. Results : In cases of contact lenses with added 2-hydroxy-4-methoxy-benzophenone and 2, 4-dihydroxy-benzophenone which showed transmittances of 0. 00~3. 50% and 0. 25~5. 75, respectively for UV-A and UV-B showing a UV-blocking effect. Also. in cases of contact lenses with added 4.4'-Difluorbenzophenone, 4-Fluorbenzophenone, the results showed transparaneies of 40.00~57.50%. 19.25~28.25% respectively for UV-A and UV-B showing that they have UV-blocking effects. Conclusions : Based on the results of this study, the benzophenone group is suitable for use as a materia! to UV-blocking contact lenses.
