Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Enhancement in the Amine Resistance of Membranes for Membrane Contactors by Plasma Treatment

플라즈마를 이용한 막접촉기용 막의 아민 용액에 대한 저항성 향상

  • Choi, Seung-Hak (Department of Chemical Engineering, Sun-Moon University) ;
  • Oh, Sae-Joong (Department of Chemical Engineering, Sun-Moon University) ;
  • Cho, Nam-Joon (Department of Applied Chemical Engineering, Korea University of Technology and Education) ;
  • Koo, Ja-Kyung (Department of Applied Chemical Engineering, Korea University of Technology and Education)
  • 최승학 (선문대학교 재료화학공학부) ;
  • 오세중 (선문대학교 재료화학공학부) ;
  • 조남준 (한국과학기술교육대학교 응용화학공학과) ;
  • 구자경 (한국과학기술교육대학교 응용화학공학과)
  • Received : 2002.09.10
  • Accepted : 2002.09.27
  • Published : 2002.12.01
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Abstract

Celgard and Durapore membranes were plasma-treated to enhance the hydrophobicity and durability to amine solution. The plasma gases or vapors used were $CF_4$, Hexafluorobenzene(HFP), Pentafluoropyridine(PFP) and Hexamethyldisiloxane(HMDS). The surface structure of plasma treated membranes was analyzed by FT-IR spectra. The contact angles of plasma treated Celgard and Durapore were dependent of the plasma gases used. $CF_4$ and HMDS plasma increased the contact angles of Celgard and Durapore, while HFB and PFP plasma decreased the contact angles. Durability to monoethanolamine(MEA) solution was enhanced for $CF_4$ plasma-treated Durapore, while the durability was not good for plasma-treated Celgard.

Celgard 및 Durapore 막을 플라즈마로 처리하여 막의 소수성 및 아민용액에 대한 저항성을 조사하였다. 플라즈마 기체(또는 증기)로는 $CF_4$, Hexafluorobenzene(HFP), Pentafluoropyridine(PFP) 그리고 Hexamethyldisiloxane(HMDS)를 사용하였다. 플라즈마로 처리시킨 막의 표면구조는 FT-IR 스펙트럼을 이용하여 분석하였다. 플라즈마로 처리시킨 막의 물에 대한 접촉각은 플라즈마 기체의 종류에 따라 다른 특성을 나타내었다. Celgard와 Durapore 모두 HFB이나 PFP의 플라즈마로 처리하였을 경우에는 접촉각이 감소하였으나, $CF_4$ 또는 HMDS의 플라즈마로 처리하였을 경우에는 플라즈마로 처리하지 않은 경우보다 접촉각이 증가하였다. Monoethanolamine(MEA)용액에 대한 저항성은 Celgard의 경우에는 플라즈마로 처리하였을 경우가 순수한 Celgard보다 낮았으나, Durapore는 $CF_4$ 플라즈마로 처리하였을 경우 MEA에 대한 저항성이 증대되었다.

Keywords

Acknowledgement

Supported by : 에너지관리공단

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