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The Membrane Society of Korea (한국막학회)
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Preparation of the Multilayer Membrane Using the Phase Separated and Pressurization (PSP) Method

가압식 코팅법을 이용한 다층막 제조

  • Jeon, Yi Seul (Department of Advanced Material and Chemical Engineering, Hannam University) ;
  • Rhim, Ji Won (Department of Advanced Material and Chemical Engineering, Hannam University)
  • 전이슬 (한남대학교 대덕밸리캠퍼스 화공신소재공학과) ;
  • 임지원 (한남대학교 대덕밸리캠퍼스 화공신소재공학과)
  • Received : 2015.10.06
  • Accepted : 2015.10.21
  • Published : 2015.10.31
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Abstract

The porous support polyvinylidene fluoride (PVDF) with a salting out based on the hollow fiber membrane polyethyleneimine (PEI) and polyvinylsulfonic acid (PVSA) by coating with by phase separated and pressurization (PSP) method to produce a multilayer membrane. The resulting membranes were characterized under the various conditions, such as the heat treatment temperature, coating concentration, feed concentration, cross-linking time and cross-link agent concentration in terms of flux and rejection rate for NaCl 100 ppm solution at 4 atm. The best results were PEI 20,000 ppm and PVSA 1,000 ppm, PEI 15% with a 2% malic acid aqueous solution coated by PSP method the hollow fiber membrane heat-treated for 1 minute showed flux 24.3 LMH, the rejection of 82.1%.

다공성 지지체인 Polyvinylidene fluoride (PVDF) 중공사막에 염석법을 기반으로 하여 Polyethyleneimine (PEI)와 Polyvinylsulfonic acid (PVSA)를 가압법(phase separated and pressurization, PSP)으로 코팅시켜 다층막을 제조하였다. 이에 열처리 온도, 코팅농도, 유입수 농도, 가교시간 및 가교제 농도에 대하여 NaCl 100 ppm을 공급액으로 하여 4 atm에서 투과도와 제거율을 알아보고자 하였다. 가장 좋은 결과로는 PEI 20,000 ppm과 PVSA 1,000 ppm, PEI 15%에 말산 2% 수용액으로 가압코팅 후 열처리하였을 때 투과도 24.3 LMH, 제거율 82.1%의 결과를 얻을 수 있었다.

Keywords

References

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