Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Preparation and Properties of SEBS (Styrene Ethylene Butadiene Styrene Copolymer)-Clay Hybrid Gas Barrier Membranes

Gas Barrier성 SEBS (Styrene Ethylene Butadiene Styrene Copolymer)-Clay 하이브리드 막의 제조 및 물성

  • Nam Sang Yong (Department of Polymer Science and Engineering, Engineering Research Institute, Gyeongsang National University) ;
  • Yeom Bong Yeol (Department of Chemical Engineering, Yonsei University) ;
  • Min Byoung Ryul (Department of Chemical Engineering, Yonsei University) ;
  • Kim Young Jin (Department of Polymer Science and Engineering, Engineering Research Institute, Gyeongsang National University)
  • 남상용 (경상대학교 공과대학 고분자공학과, 공학연구원) ;
  • 염봉열 (연세대학교 공과대학 화학공학과) ;
  • 민병렬 (연세대학교 공과대학 화학공학과) ;
  • 김영진 (경상대학교 공과대학 고분자공학과, 공학연구원)
  • Published : 2005.03.01
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Abstract

SEBS-clay hybrid membranes were prepared by melt intercalation method with internal mixer. In the hybrid, the amount of clay content was fixed to 5 phr. MMT was intercalated or exfoliated by the ionomer and it was confirmed by X-ray diffraction method. D-spacing of the characteristic peak from MMT plate in SAXD was moved and diminished. Gas permeability, mechanical properties and thermal properties of the SEBS-clay hybrid membranes were investigated. Gas permeability through the SEBS-clay hybrid membranes decreased due to increased tortuosity made by intercalation of clay in SEBS.

본 연구에서는 SEBS와 여러 가지의 유기화물로 처리된 MMT (montmorillonite) type의 clay를 이용하여 SEBS-clay 하이브리드 막을 용융삽입법으로 제조하였다. clay의 함량은 5 phr (per hundred resin)로 고정하였다. internal mixer를 사용하여 clay를 SEBS에 분산시켰으며, 제조된 SEBS-clay 하이브리드에서 clay의 특성피크가 완전히 박리되거나 이동하는 XRD 결과로부터 clay의 층간거리가 넓어지는 고분자의 clay 층간삽입을 확인하였다. Clay의 종류에 따라서 제조된 SEBS-clay 하이브리드 막의 가스투과도, 기계적 물성 및 열적 성질을 측정하였다. SEBS-clay 하이브리드 막은 clay 자체의 도입과 층간거리의 확대로 기체분자의 tortuosity를 증가시켜서 가스투과도를 저하시키는 것을 확인하였다.

Keywords

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