멤브레인 (Membrane Journal)

  • 제33권6호
  • /
  • Pages.383-389
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  • 2023
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  • 1226-0088(pISSN)
  • /
  • 2288-7253(eISSN)
한국막학회 (The Membrane Society of Korea)
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친수성 PEGDA 하이드로젤 지지체 기반 FO 분리막의 제조

Fabrication of Hydrophilic PEGDA Hydrogel-supported Forward Osmosis Membranes

  • 김달용 (고려대학교 화공생명공학과) ;
  • 박성준 (고려대학교 화공생명공학과) ;
  • 이정현 (고려대학교 화공생명공학과)
  • Dal Yong Kim (Department of Chemical and Biological Engineering, Korea University) ;
  • Sung-Joon Park (Department of Chemical and Biological Engineering, Korea University) ;
  • Jung-Hyun Lee (Department of Chemical and Biological Engineering, Korea University)
  • 투고 : 2023.12.04
  • 심사 : 2023.12.07
  • 발행 : 2023.12.31
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⟨ 이전 논문 다음 논문 ⟩

초록

폴리에틸렌 글라이콜 다이아크릴레이트 (polyethylene glycol diacrylate, PEGDA) 하이드로젤을 정삼투 (forward osmosis, FO) 분리막의 지지체로 사용하여 고성능의 FO 분리막을 제조하였다. 친수성의 PEGDA를 자외선 조사를 통한 중합과 그에 따른 상분리를 이용하여 다공성으로 구조화하였고, 매우 높은 친수성을 가진 하이드로젤 지지체를 얻을 수 있었다. 제조된 친수성 PEGDA 지지체 위에 높은 수투과도와 염 선택도를 확보하기 위해서 일반적인 계면중합 방식이 아닌 톨루엔을 유기 용매로 사용한 계면중합 방식(TIP)으로 선택층을 도입하였다. 제조된 PEGDA 지지체 기반 분리막은 1.0 M NaCl 유도 용액과 증류수 유입수를 통한 FO 성능 측정에서 상용 HTI 분리막들에 비해서 매우 높은 수투과도와 낮은 염 선택도를 나타내었다. 본 연구를 통해, 기존의 소수성 지지체를 추가적으로 개질하는 방식이 아닌 새로운 물질과 제조방식을 사용한 FO 지지체의 가능성을 제시하고자 한다.

A high-performance forward osmosis (FO) membrane was prepared using polyethylene glycol diacrylate (PEGDA) hydrogel as a support layer. Through the UV-induced polymerization and subsequent phase separation of PEGDA, the crosslinked, hydrophilic, and porous PEGDA suppor layer was obtained. To achieve high FO flux and salt selectivity using the fabricated PEGDA support, a selective layer was synthesized via the toluene-assisted interfacial polymerization (TIP), in which toluene is used as an organic solvent. The prepared PEGDA-based FO membrane showed higher FO water flux and lower salt selectivity compared with commercial HTI membranes using 1.0 M NaCl draw solution and DI water feed solution. We propose the strategy to fabricate high-performance FO membranes utilizing supports formed with new hydrophilic materials and fabrication processes.

키워드

과제정보

본 연구는 2023년도 정부의 재원으로 한국연구재단의 연구비 지원(2023R1A2C2002913)을 받아 수행되었습니다.

참고문헌

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