Copolymerization and Contact Lens Application of HEMA-Substituted Polyphosphazene 


Vol. 53,  No. 3, pp. 340-344, Jun.  2009
10.5012/jkcs.2009.53.3.340


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  Abstract

Phosphonitrillic chroride cyclic trimer 화합물을 200~300 oC 하에 개환중합하여 선상 고분자를 얻 은 후 Grignard 시약 (C2=CH-MgBr)을 천천히 가하여 vinyl 기를 포함하는 polyphosphazene을 합성하였 으며, 이 폴리머를 HEMA(2-hydroxyethyl methacrylate)와 반응시켜 HEMA/vinyl-substituted polyphosphazene 을 얻었다. 이 고분자를 AIBN (azobisisobutyronitrile) 개시제 존재 하에서 교차결합제로 EGDMA(ethylene glycol dimethacrylate) 그리고 NVP (N-vinyl-pyrrolidone)을 혼합하여 공중합 시켰다. 얻어진 공중합체에 대한 측정 결과 산소투과율 (Dk/t)은 88로 측정되었으며, 함수율은 30.89% 그리고 가시광선 투과율은 87%로 나타났다. 이 자료로부터 이 공중합체가 우수한 콘택트렌즈 재료임을 발견하였다. HEMA/vinyl-substituted polyphosphazene was prepared by the ring-opening polymerization of phosphonitrillic chroride trimer at 200~300 oC, followed by Grignard reaction with vinyl magnesium bromide and then by the reaction with HEMA(2-hydroxyethyl methacrylate). HEMA/vinyl-substituted polyphosphazene was copolymerized with EGDMA(ethylene glycol dimethacrylate; used as a cross-linker for the free-radical copolymerization), NVP (N-vinyl-pyrrolidone) in the presence of AIBN (azobisisobutyronitrile) as a radical initiator. The oxygen transmissibility, water content and visible-ray transmissibility of the resulting copolymer were measured to be Dk/t 88, 30.89% and 87%, respectively, indicating that the copolymer can be used as a good contact lens material.

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  Cite this article

[IEEE Style]

T. H. Kim and A. Y. Sung, "Copolymerization and Contact Lens Application of HEMA-Substituted Polyphosphazene," Journal of the Korean Chemical Society, vol. 53, no. 3, pp. 340-344, 2009. DOI: 10.5012/jkcs.2009.53.3.340.

[ACM Style]

Tae Hun Kim and A Young Sung. 2009. Copolymerization and Contact Lens Application of HEMA-Substituted Polyphosphazene. Journal of the Korean Chemical Society, 53, 3, (2009), 340-344. DOI: 10.5012/jkcs.2009.53.3.340.

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