화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.29, No.6, 593-598, November, 2005
Export Citation
pH 의존 특성을 갖는 Poly(ethylene-alt-maleic anhydride)/Poly(4-vinyl pyridine) 다층막의 염료 흡착 및 방출 거동 연구
pH-Dependent Dye Adsorption and Release Behaviors of Poly(ethylene-alt-maleic anhydride)/Poly(4-vinyl pyridine) Multiplayer Films
홍숙영, 이준열†
  • 경희대학교 환경ㆍ응용화학대학 고분자ㆍ섬유 신소재 전공
Sook Young Hong, and Joon Youl Lee†
  • Department of Advanced Polymer and Fiber Materials, College of Environment and Applied Chemistry, Kyung Hee University, 1 Seochun-ri, Kiheung, Yongin, Gyeonggi 449-701, Korea
E-mail:
초록
Layer-by-layer(LbL) 자기 조립법에 의한 poly(ethylene-alt-maleic anhydride)(PEMAh)/poly(4-vinyl pyridine)(P4VP) 다층막의 염료 흡착 거동 및 pH 변화에 의한 염료 방출 거동을 Rodamine 6G(R6G)를 지시제로 사용하여 조사하였다. UV-vis 분광 분석을 이용하여 (PEMAh/P4VP)n 다층막의 두께 및 R6G의 흡착 및 방출 거동을 조사하였다. 다층막에 흡착되는 R6G의 흡착량은 필름의 두께 증가에 따라 선형적으로 증가하였다. (PEMAh/P4VP)n 다층막의 투과성은 pH 조건에 민감한 거동을 보였으며, 방출액의 pH가 감소할수록 R6G 방출 속도와 방출량은 증가하였다. PEMAh/poly(ethyleneimine)(PEI) capping layer를 (PEMAh/P4VP)n 다층막에 추가로 적층함으로써 흡착된 R6G의 방출 속도를 조절할 수 있었다.
This work studied the loading capabilities and release behaviors of poly(ethylene-alt-maleic anhydride) (PEMAh)/poly(4-vinyl pyridine) (P4VP) multilayer films formed by the layer-by-layer(LbL) sequential self-assembly method, using Rodamine 6G(R6G) as an indicator. Thickness of the multilayer, and loading and subsequent release behavior of R6G from the multilayer were studied using UV-visible spectroscopy. The amount of R6G loaded in multilayer film increased linearly with increasing film thickness. pH-Sensitive permeability was observed, where lower pH environments increased both release rate and release amount. By additional assembling of PEMAh/poly(ethyleneimine) (PEI) capping layers on top of (PEMAh/P4VP)n multilayers, the release of R6G was better controlled.
Keywords:layer-by-layer;self-assembly;polyelectrolyte multilayer;pH-sensitive permeability
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