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Study on the Polymerization of Hydrogel Polymer Containing HEMA and Measurement Method of Oxygen Transmissibility

HEMA를 포함한 친수성 폴리머 중합 및 산소 투과율 측정 방법에 관한 연구

  • Kim , Tae-Hun (Department of Ophthalmic Optics, Daebul University) ;
  • Sung, A-Young (Department of Ophthalmic Optics, Daebul University)
  • 김태훈 (대불대학교 안경광학과) ;
  • 성아영 (대불대학교 안경광학과)
  • Published : 2009.12.20

Abstract

HEMA (2-hydroxyethyl methacrylate) is a hydrophilic material which is broadly used for ophthalmologic purposes and especially in the manufacture of soft contact lenses. Also, the oxygen transmissibility (Dk/t) is a very important physical characteristic in the evaluation of a material’s adequacy to be used to produce contact lenses. This study used HEMA (2-hydroxyethyl methacrylate), MMA (methylmethacrylate), NVP (Nvinyl-pyrrolidone), the cross-linker EGDMA (ethylene glycol dimethacrylate) for copolymerization, and measured the oxygen transmissibility of the central and peripheral areas of the manufactured general and color contact lenses using the polarographic method. The measurement showed that the decreased amount of oxygen transmissibility of the central and peripheral areas of the contact lenses measured using the polarographic method range between 40.77% and 49.13%, and the oxygen transmissibility of the color contact lens showed a larger decrease due to the effects of the coloring materials.

Keywords

HEMA;Oxygen transmissibility;Ophthalmic material

References

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