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The Membrane Society of Korea (한국막학회)
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Preparation of Polyketone Micro/nanofiber Membrane based on Electrospinning Condition and Its Application in Oil-Water Separation

전기방사법의 제조 조건에 따른 폴리케톤 마이크로/나노섬유 분리막 제조 및 유수 분리 적용

  • Hou, Jian (Department of Chemical Engineering, Keimyung University) ;
  • Yun, Jaehan (Department of Chemical Engineering, Keimyung University) ;
  • Park, Chanju (Department of Chemical Engineering, Keimyung University) ;
  • Choi, Jinwon (Department of Chemical Engineering, Keimyung University) ;
  • Jeon, Sungil (Membrare Co. Ltd.) ;
  • Lee, Chang Hyun (Department of Energy Engineering, Dankook University) ;
  • Byun, Hongsik (Department of Chemical Engineering, Keimyung University)
  • 후건 (계명대학교 화학공학과) ;
  • 윤재한 (계명대학교 화학공학과) ;
  • 박찬주 (계명대학교 화학공학과) ;
  • 최진원 (계명대학교 화학공학과) ;
  • 전성일 (주식회사 멤브레어) ;
  • 이창현 (단국대학교 에너지공학과) ;
  • 변홍식 (계명대학교 화학공학과)
  • Received : 2021.11.15
  • Accepted : 2021.12.08
  • Published : 2021.12.31
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Abstract

In this study, a novel material polyketone (PK) was chosen and PK micro/nano fiber membranes were fabricated via electrospinning method under various conditions. After that, the potential application in oil-water separation was thoroughly investigated. The surface of microfiber membrane formed under high humidity especially became much rougher than that formed under low humidity. When salt was added to the spinning solution, the diameter of fibers was reduced up to 90% and the nanofiber membranes could be formed. The oil/water emulsions were prepared and separated under gravity condition using the manufactured rPK-LNC and PK-H membranes. The separation characteristics was evaluated by measuring total organic carbon (TOC) and turbidity. Meanwhile, the changes in the physical properties of fiber membranes under various conditions and with or without salt, as well as the changes in oil water separation characteristics were also studied.

본 연구에서는 polyketone (PK)을 이용하여 전기방사 조건에 따른 섬유 형상의 특성 변화와 유수분리 가능성을 확인해 보았다. 고습과 저습 조건에서는 마이크론 직경의 섬유가 형성되었으며, 특히 고습에서는 섬유의 표면이 거칠게 변한 것이 확인되었다. 섬유 직경을 micro에서 nano로 변경하기 위하여 방사용액에 염을 추가하였으며, 그 결과 섬유 직경이 약 90% 감소하는 것을 확인할 수 있었다. 제조된 rPK-LNC와 PK-H로 유수분리 특성을 확인하기 위해 oil/water 에멀션으로 중력 조건에서 유수분리를 진행하였으며 total organic carbon (TOC)와 탁도를 측정하여 특성을 분석하였다. 제거율 확인결과 탁도가 TOC와 동일한 경향성을 나타내는 것이 확인되었다. 따라서 본 연구에서는 고분자의 방사조건과 염의 유무에 따른 분리막의 섬유 형상과 물리적 특성변화와 이를 이용한 유수분리 특성에 대해 연구하였다.

Keywords

Acknowledgement

이 연구는 2020년도 산업통상자원부 및 산업기술평가관리원(KEIT) 연구비 지원에 의한 연구임(20012133 / 1415173356). 또한 (주) 멤브레어의 과제 지원에 감사드립니다.

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