Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Surface Modification of Poly(tetrafluoroethylene) (PTFE) Membranes

PTFE 막의 표면 개질 방법

  • Jun Kyu Jang (Department of Energy Engineering, Hanyang University) ;
  • Chaewon Youn (Department of Energy Engineering, Hanyang University) ;
  • Ho Bum Park (Department of Energy Engineering, Hanyang University)
  • 장준규 (한양대학교 에너지공학과) ;
  • 윤채원 (한양대학교 에너지공학과) ;
  • 박호범 (한양대학교 에너지공학과)
  • Received : 2023.02.23
  • Accepted : 2023.02.25
  • Published : 2023.02.28
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Abstract

In this review, surface modification methods of hydrophobic poly(tetrafluoroethylene) (PTFE) membrane are introduced and their improved hydrophilicity results are discussed. Fluoropolymer based membranes, represented by PTFE membranes have been used in various membrane separation processes, including membrane distillation, oil separation and gas separation. However, despite excellent physical properties such as chemical resistance, heat resistance and high mechanical strength, the strong hydrophobicity of PTFE membrane surface has become a challenging factor in expanding its membrane separation application. To improve the separation performance of PTFE membranes, wet chemical, hydrophilic coating, plasma, irradiation and atomic layer deposition are applied, modifying the surface property of PTFE membranes while maintaining their inherent properties.

본 총설은 소수성 불소수지계 분리막의 표면 개질에 대한 개론으로 다양한 표면 개질 방법 및 그 연구 결과를 중점적으로 서술하였다. PTFE로 대표되는 불소수지계 고분자 분리막은 막 증류, 유수 분리, 기체 분리를 포함한 다양한 막 분리 공정에서 사용되어왔다. PTFE 막은 내화학성, 내열성, 높은 기계적 강도와 같은 뛰어난 물성에도 불구하고 소수성 표면 특성으로 인해 기술 적용의 확장에 제한적이다. 친수성 향상을 위해 습식 화학법, 친수성 고분자 코팅, 플라즈마 처리, 조사, 원자층 증착과 같은 다양한 PTFE 표면 개질 방법을 이용하며 이를 통해 불소수지계 분리막의 응용분야가 확장될 수 있다.

Keywords

Acknowledgement

본 연구는 산업통상자원부 산하 한국산업기술평가관리원(KEIT)의 지원으로 수행되었습니다(No. 20013583).

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