멤브레인 (Membrane Journal)

  • 제32권2호
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  • Pages.109-115
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  • 2022
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  • 1226-0088(pISSN)
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  • 2288-7253(eISSN)
한국막학회 (The Membrane Society of Korea)
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상전이법 기반 평막 제조과정에서 부직포 영향 분석연구

Effect of Nonwoven Support During Fabrication of Flat Sheet Membranes via Phase Inversion Method

  • 김민재 (인천대학교 에너지화학공학과) ;
  • 김수빈 (인천대학교 에너지화학공학과) ;
  • 김수민 (인천대학교 에너지화학공학과) ;
  • 이호익 (한국생산기술연구원 융합기술연구소) ;
  • 김정 (인천대학교 에너지화학공학과)
  • Kim, Minjae (Energy and Chemical Engineering Department, Incheon National University) ;
  • Kim, Subin (Energy and Chemical Engineering Department, Incheon National University) ;
  • Kim, Sumin (Energy and Chemical Engineering Department, Incheon National University) ;
  • Lee, Hoik (Research Institute of Industrial Technology Convergence, Korea Institute of Industrial Technology) ;
  • Kim, Jeong F. (Energy and Chemical Engineering Department, Incheon National University)
  • 투고 : 2022.02.25
  • 심사 : 2022.04.18
  • 발행 : 2022.04.30
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초록

본 연구에서는 용매로 침액되었을 시 전반적으로 더 균일한 상전이법 기반 평막 제조 시 주로 사용되는 부직포 지지체의 영향을 분석하였다. 도프용액의 점도가 낮을 경우 용액이 부직포층으로 쉽게 침투하여 불균일한 막이 형성되는 것을 확인하였으며, 이를 방지하기 위해 부직포층을 유기용매로 침액하는 기법을 도입하였다. 부직포층이 유기 분리막이 생성되는 것을 확인하였으며, 수투과 및 용매투과율도 향상하는 것을 알 수 있었다. 부직포 침액의 영향은 낮은 점도에서 확연하게 나타났으며, 고분자용액의 점도가 높은 경우 침액 여부에 관계없이 동일한 성능을 얻을 수 있었다.

In this work, the effect of nonwoven support during fabrication of flat sheet membranes via nonsolvent-induced phase separation, was investigated in detail. It was found that dope solutions with low viscosity tend to penetrate through the nonwoven support during phase inversion, resulting in nonhomogeneous membranes. A simple soaking treatment of nonwoven support prevented such unwanted dope penetration, and resulted in membranes with higher water and solvent permeance performance. The dope penetration through nonwoven was more prominent in solutions with low viscosity, and the nonwoven soaking treatment not effective in solutions with high viscosity.

키워드

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