멤브레인 (Membrane Journal)

  • 제25권6호
  • /
  • Pages.538-546
  • /
  • 2015
  • /
  • 1226-0088(pISSN)
  • /
  • 2288-7253(eISSN)
한국막학회 (The Membrane Society of Korea)
권호 표지
DOI QR코드

DOI QR Code

Layer-by-Layer 코팅법을 적용한 복합막 제조와 투과성능 평가

Preparation and Performance of Composite Membrane Prepared by Layer-by-Layer Coating Method

  • 전이슬 (한남대학교 대덕밸리캠퍼스 화공신소재공학과) ;
  • 임지원 (한남대학교 대덕밸리캠퍼스 화공신소재공학과)
  • Jeon, Yi Seul (Department of Advanced Material and Chemical Engineering, Hannam University) ;
  • Rhim, Ji Won (Department of Advanced Material and Chemical Engineering, Hannam University)
  • 투고 : 2015.12.08
  • 심사 : 2015.12.28
  • 발행 : 2015.12.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

폴리설폰막 위에 친수성 고분자를 Layer-by-Layer법으로 코팅하여 복합막을 제조하였다. FE-SEM 분석을 통하여 복합막 표면과 기공 내 코팅층을 확인하였다. 또한 100 ppm NaCl 용액에 대한 복합막의 투과성능 평가를 실시하였다. 복합막 제조를 위한 코팅 고분자는 PVSA, PEI, PAA, PSSA, PSSA_MA를 사용하였다. 폴리설폰막 표면에 8,000 ppm PAA (이온세기 0.35) 수용액을 3분 동안 코팅한 뒤 10,000 ppm PEI 수용액을 4분 동안 코팅하였다. 그 결과 PAA-PEI 복합막의 투과도는 101 LMH, 제거율은 66.7%로 가장 좋은 투과성능을 나타내었다. PAA-PEI 복합막의 투과성능은 도레이케미칼의 NE 4040-70 (투과도 = 30 LMH, 염 배제율 = 40~70%) 제품과 유사한 성능을 보여주는 우수한 투과 특성을 나타내었다.

In this study, composite membrane is prepared by Layer-by-Layer method using hydrophobic polymer as a coating material on the polysulfone support. The existence of coating layer on the surface and cross section was confirmed by the scanning electronic microscopy. The flux and rejection of the resulting membranes were characterized using 100 ppm NaCl feed solution. PVSA, PEI, PAA, PSSA, PSSA_MA were used as a coating polymer in this study. The composite membrane prepared by using 8,000 ppm PAA solution (Ion strength = 0.35, Coating time = 3 min) and 10,000 ppm PEI solution (Coating time = 4 min). As a result, PAA-PEI composite membrane showed flux of 101 LMH and salt rejection of 66.7%. The composite membrane showed the comparable performance as good as NE 4040-70 (Flux = 30 LMH, Rejection = 40~70%) model produced by Toray Chemical co.

키워드

참고문헌

  1. G.-J. Hwang, H. Ohya, and T. Nagai, "Ion exchange membrane based on block copolymers part III: preparation of cation exchange membrane", J. Membr. Sci., 156, 61 (1999). https://doi.org/10.1016/S0376-7388(98)00331-7
  2. H. S. Shin, C. S. Lee, J. H. Jun, S. Y. Jung, J. W. Rhim, and S. Y. Nam, "Preparation and characterization of ion exchange membrane for direct methanol fuel cell (DMFC) using sulfonated polysulfone", Membr. J., 12, 247 (2002).
  3. S.-R. Choi, S.-J. Park, B.-K. Seo, K. W. Lee, S. T. Nam, and M.-J. Han, "Effect of propionic acid additive on preparation of phase inversion polysulfone membrane", Membr. J., 18, 317 (2008).
  4. M. J. Han and S. T. Nam, "Thermodynamic and rheological variation in polysulfone solution by PVP and its effect in the preparation of phase inversion membrane", J. Membr. Sci., 202, 55 (2002). https://doi.org/10.1016/S0376-7388(01)00718-9
  5. B. Chakrabarty, A. K. Ghoshal, and M. K. Purkait, "Preparation, characterization and performance studies of polysulfone membranes uisng PVP as and additive", J. Membr. Sci., 315, 36 (2008). https://doi.org/10.1016/j.memsci.2008.02.027
  6. E. M. V. Wagner, A. C. Sagle, M. M. Sharm, Y. H. Lac, and B. D. Freeman, "Surface modification of commercial polyamide desalination membranes using poly(ethylene glycol) diglycidyl ether to enhance membrane fouling resistance", J. Membr. Sci., 367, 9863 (2011).
  7. M. K. Sinha and M. K. Purkait, "Increase in hydrophilivity of polysulfone membrane using polyethylene glycol methyl ether", J. Membr. Sci., 437, 7 (2013). https://doi.org/10.1016/j.memsci.2013.03.003
  8. W. Sun, J. Liu, H. Chu, and B. Dong, "Pretreatment and membrane hydrophilic modification to reduce membrane fouling", Membranes, 3, 226 (2013). https://doi.org/10.3390/membranes3030226
  9. W. Jin, A. Toutianoush, and B. Tieke, "Use of polyelectolyte layer-by-layer assemblies as nanofiltration and reverse osmosis membranes", Langmuir, 19, 2250 (203).
  10. Q. Saren, C. Q. Qui, and C. Y. Tang, "Synthesis and characterization of novel forward osmosis membranes based on layer-by-layer assemble", Environ. Sci. Technol., 45(12), 5201 (2011). https://doi.org/10.1021/es200115w
  11. R. Wang, L. Shi, C. Y. Tang, S. Chou, C. Qiu, and A. G. Fane, "Characterization of in-house made composite forward osmosis hollow fiber membranes", J. Membr. Sci., 335, 158 (2010).
  12. A. Tiraferri, N. Y. Yip, W. A. Phillip, J. D. Schiffman, and M. Elimelech, "Relating performance of thin-film composite forward osmosis membranes to support layer formation and structure", J. Membr., Sci., 367, 340 (2011). https://doi.org/10.1016/j.memsci.2010.11.014
  13. R. Malaisamy, A. Talla-Nwafo, and K. L. Jones, "Polyelectrolyte modification of nanofiltration membrane for selective removal of monovalent anions", Sep. Purif. Technol., 77, 367 (2011). https://doi.org/10.1016/j.seppur.2011.01.005
  14. C. Qiu, S. Qi, and C. Y. Tang, "Synthesis of high flux forward osmosis membranes by chemically crosslinked layer-by-layer polyelectrolytes", J. Membr. Sci., 381, 74 (2011). https://doi.org/10.1016/j.memsci.2011.07.013
  15. C. Ba, D. A. Ladner, and J. Economy, "Using polyelectro coating to improve fouling resistance of a positively charged nanofiltration membrane", J. Membr. Sci., 347, 250 (2010). https://doi.org/10.1016/j.memsci.2009.10.031
  16. Y.-F. Yang, L.-S. Wan, and Z.-K. Xu, "Surface hydrophilization of microporous polypropylene membrane by the interfacial crosslinking of polyethylenimine", J. Membr. Sci., 337, 70 (2009). https://doi.org/10.1016/j.memsci.2009.03.023
  17. K. W. Lawson and D. R. Lloyd, "Membrane distillation", J. Membr. Sci., 124, 1 (1997). https://doi.org/10.1016/S0376-7388(96)00236-0
  18. K. V. Plakas and A. J. Karabelas, "Removal of pesticides from water by NF and RO membranes-A review", Desalination, 287, 255 (2012). https://doi.org/10.1016/j.desal.2011.08.003
  19. P. Eriksson, M. Kyburz, and W. Pergande, "NF membrane characteristics and evaluation for sea water processing applications", Desalination, 184, 281 (2005). https://doi.org/10.1016/j.desal.2005.04.030
  20. P. Eriksson, "Nanofiltration extends th range of membrane filtration", Environ. Prog., 7, 58 (1988). https://doi.org/10.1002/ep.3300070116
  21. B. J. Cha, S. D. Chi, and J.-H. Kim, "Membrane market for water treatment", KIC news, 14, 2 (2011).
  22. E. H. Cho and J. W. Rhim, "Preparation of a new charged nanofiltration membrane based on polyelectrolyte complex by forced fouling induction for a household water purifier", Macromol. Res., 23, 183 (2015). https://doi.org/10.1007/s13233-015-3017-1