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제123회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Characteristics of Hydrogel Lenses Containing Nanoparticles of Cerium Oxide and Cerium Iron Hydroxide with 4-Chlorostyrene

등록일
2019년 2월 13일 10시 50분 51초
접수번호
4041
발표코드
MAT.P-483 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 19일 (금요일) 11:00~12:30
발표형식
포스터
발표분야
Material Chemistry
저자 및
공동저자
Su-mi Shin, Jonghwan Do, A-Young Sung*
Department of Optometry, Daegu Catholic University, Korea
The physical properties of hydrogel lenses made of cerium oxide and cerium iron hydroxide nanoparticles containing 4-chlorostyrene as an additive were compared and analyzed. Cerium oxide and cerium iron hydroxide were used to copolymerize with the basic monomer HEMA (2-hydroxyethyl methacrylate), 4-chlorostyrene, N-vinyl-2-pyrrolidone (NVP), the cross-linker agent (ethylene glycol dimethacrylate) and initiator (azobisisobutyronitrile). Also, the optical and physical properties such as spectral transmittance, water content, contact angle and breaking strength of the prepared lens were measured. 4-Chlorostyrene did not show any significant difference in spectral transmittance, and UV rays were blocked by the effect of cerium oxide and cerium iron hydroxide. As the amount of 4-chlorostyrene, the water contents of cerium oxide group and cerium iron hydroxide group were in the range of 41.72 ~ 24.49% and 41.21 ~ 26.66%, respectively. The breaking strengths were in the range of 0.18343 ~ 2.00092kgf and 0.13311 ~ 1.67409kgf, respectively. In particular, the contact angle and breaking strength of cerium oxide group increased rapidly from 3% content of 4-chlorostyrene and from 5% content of 4-chlorostyrene to cerium iron hydroxide group. 4-Chlorostyrene is an excellent hydrogel lens material that decreases water content, and increases breaking strength without affecting the spectral transmittance.

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