Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Preparation and Fundamental Characterization of EVOH Hollow Fiber Membranes via Thermally Induced Phase Separation (TIPS)

열유도상분리법을 이용한 EVOH 중공사 분리막의 제조 및 기본 특성

  • Hou, Jian (Department of Chemical Engineering, Zibo Vocational Institute) ;
  • Yun, Jaehan (Department of Chemical Engineering, Keimyung University) ;
  • Jeon, Sungil (MEMBRARE Co., Ltd.) ;
  • Chung, Kun Yong (Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology) ;
  • Byun, Hongsik (Department of Chemical Engineering, Keimyung University)
  • 후건 (쯔보 직업대학교 화학공학과) ;
  • 윤재한 (계명대학교 화학공학과) ;
  • 전성일 (주식회사 멤브레어) ;
  • 정건용 (서울과학기술대학교 화공생명공학과) ;
  • 변홍식 (계명대학교 화학공학과)
  • Received : 2018.12.07
  • Accepted : 2018.12.26
  • Published : 2018.12.31
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Abstract

Poly(ethylene-co-vinylalcohol) EVOH hollow fiber membranes were successfully fabricated via a thermally induced phase separation (TIPS) method. It was observed that all membranes fabricated under different spinning conditions had interconnected and bicontinuous structures through liquid-liquid phase separation. Glycerol and poly(ethylene glycol) 200 were used as diluents for the TIPS method. Glycerol was used as a mixing component in quenching bath to control pores on the outer surface of the hollow fiber membrane. Hot quenching bath with a mixing component to generate large pores on the outer surface of the hollow fiber membrane. The effects of polymer concentration, diluent and quenching bath on the morphologies, water permeabilities, and mechanical properties of the EVOH hollow fiber membranes were systematically investigated. The relationship between water permeability, mechanical properties and spinning conditions was discussed in detail.

본 연구에서 Poly(ethylene-co-vinylalcohol) EVOH 중공사막은 열유도상분리(TIPS)법을 이용하여 제조하였다. 다양한 조건에서 제조된 모든 분리막에서 액-액 상분리에 의해 기공이 서로 연결되어 있는 스폰지 구조가 관찰되었다. 글리세롤과 PEG200은 TIPS 방법에서 희석제로 사용하였고, 냉각조에 글리세롤을 혼합한 냉매를 사용하여 중공사 외표면의 기공을 조절하였다. 또한 혼합냉매의 온도를 높여 큰 기공의 형성을 유도하였다. 본 연구에서는 고분자의 농도, 희석제, 냉각조의 영향에 따른 분리막의 구조, 투과도, 기계적 강도에 대해 실험을 통해 알아보고 상호관계에 대해 심도 있게 연구하였다.

Keywords

References

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