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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 53, Number 3
JKCSEZ 53(3)
June 20, 2009 

 
Title
Copolymerization and Contact Lens Application of HEMA-Substituted Polyphosphazene

HEMA가 치환된 Polyphosphazene의 공중합 및 콘택트렌즈 응용
Author
Tae Hun Kim, A Young Sung*

김태훈, 성아영*
Keywords
폴리포스파젠, HEMA, 산소투과율 , Polyphosphazene, HEMA, Oxygen transmissibility
Abstract
Phosphonitrillic chroride cyclic trimer 화합물을 200~300 oC 하에 개환중합하여 선상 고분자를 얻 은 후 Grignard 시약 (CH2=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.

Page
340 - 344
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