Preparation of Molecularly Imprinted Poly(methacrylic acid) and Its HPLC Separation Characteristics of Retinoids

분자각인 Poly(methacrylic acid)의 제조 및 레티노이드 화합물의 HPLC 분리 특성

  • 남기훈 (성균관대학교 화학공학과) ;
  • 권영돈 (섬유공학과, 고분자 기술연구소) ;
  • 김덕준 (성균관대학교 화학공학과)
  • Published : 2002.11.01

Abstract

Molecularly imprinted polymers were prepared in particle forms by crosslinking methacrylic acid (MAA)) using all trans-retinoic acid as a template. The HPLC column packed with the prepared molecular imprinted polymers showed high capability in separation of retinoid derivatives. The column capacity factor and selectivity increased with increasing MAA to template ratio when the incorporated template amount was fixed, as it statistically generated more binding sites between host molecules and template. Molecularly imprinted polymer particles prepared via an emulsion polymerization method were round-shaped and their sizes were more uniformly distributed, but their separation capability was inferior to those obtained by solution polymerization method. It was presumably because the loss of interaction strength between MAA and the template due to hydrogen bonding either between MAA and water or between template and water during the synthesis of molecularly imprinted polymers.

주형분자로서 all-trans-retinoic acid를 사용하여 methacrylic acid (MAA)를 가교 중합함으로써 분자각인고분자를 제조하였다 제조된 분자각인고분자가 충전된 HPLC컬럼의 분리특성을 살펴본 결과 레티노이드 유도체에 대해 좋은 분리 특성을 보였다. 주형분자의 양이 일정할 경우 주형분자대비 MAA의 양이 증가할수록 컬럼의 성능인자와 선택도는 높게 나타났으며, 이는 확률적으로 보다 많은 호스트분자와 주형분자간의 결합소를 제공한데 따른 결과이다. 유화중합에 의해 제조된 분자각인 고분자입자는 둥근 형태로 관찰되었으며 그 크기도 용액중합에 의해 제조된 것에 비해 훨씬 일정하게 분산되었으나, 분리특성은 효율이 떨어짐을 알 수 있었다 이러한 이유는 유화중합에 의한 분자각인고분자 제조시 물과 MAA 또는 물과 주형분자간의 수소결합에 의해 MAA와 주형분자간의 결합력 및 결합소의 수에 손실이 있었기 때문이다.

Keywords

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