• Permeation Properties of Copolyimide UF Membrane with Good Thermal Stability
  • Chae DW, Choi HK, Jeon JY
  • 우수한 열적 특성을 갖는 Copolyimide 한외여과막의 투과 특성
  • 채동욱, 최현국, 전종영
Abstract
Copoly(bis[4-(3-aminophenoxy)phenyl]sulfone/bis(4-aminophenyl 1,4 diisopropylbenzene/pyromellite) imide (COPI) was synthesized using an one-step imidization method. COPI exhibited excellent thermal stability and dissolved well in a number of aprotic polar solvents. COPI was used for the fabrication of membrane materials. COPI ultrafiltration (UF) membranes were prepared using a phase inversion method. Factors influencing the permeation properties and the thermal stability of the membrane were studied. The preparation conditions were determined to be important factors influencing the performance of the membrane. The thermal stability of the membrane was observed by measuring the shrinkage of area and the relative ratio of the permeate flux (Jt)/pure water flux (J0). The relative flux for the poly(ethylene glycol) (MW 2.0×104) aqueous solution increased from 0.15 to 0.55 when temperature increased from 25 to 90 oC, respectively. The area of the membrane was unchanged under varying temperature. The membranes exhibited good thermal stability and were relatively simple to construct.

우수한 열적 특성을 갖는 한외 여과막의 투과 특성을 알아보기 위하여 copoly(bis[4-(3-aminophenoxy)phenyl] sulfone/bis(4-aminophenyl)1,4-diisopropylbenzene/pyromellite) imide(COPI)를 합성하여 상 분리방법으로 분리막을 제조하였다. 제조된 분리막은 운전 온도의 변화에 안정된 순수 투과유속과 용질 배재율을 나타내었다. 순수 투과유속에 대한 poly(ethylene glycol)(MW 2.0×104) 1000 ppm 수용액의 상대 투과 유속은 25 oC에서 90 oC로 운전 온도의 증가와 함께 0.15에서 0.55로 증가하였다. 또한 온도의 증가에 따른 막의 표면의 변화는 일어나지 않았다. 본 연구에서 COPI 한외 여과막은 우수한 열적 안정성을 나타내었으며, 극성 유기용매에 대한 COPI의 가용성으로 다양한 형태의 분리막 제조가 가능함을 알 수 있었다.

Keywords: ultrafiltration; membrane; copolyimide; thermal stability; relative flux

References
  • 1. Bi QY, Li Q, Tian Y, Lin YK, Wang XL, J. Appl. Polym. Sci., 127(1), 394 (2013)
  •  
  • 2. Baker RW, Membrane Technology and Application, 2nd ed., Academic Press, New York, 1984.
  •  
  • 3. Kim JM, Hwang SS, Cho CG, Polym.(Korea), 32, 106 (2011)
  •  
  • 4. Muder M, Basic Principles of Membrane Technology, Kluwer Academic Publishers, Dordrecht, 1991.
  •  
  • 5. Su Y, Jian XG, Zhang SH, Yan C, J. Membr. Sci., 271(1-2), 205 (2006)
  •  
  • 6. Nam KH, Lee W, Seo K, Han H, Polym.(Korea), 38(4), 510 (2014)
  •  
  • 7. Babu PR, Gaikar VG, J. Appl. Polym. Sci., 77(12), 2606 (2000)
  •  
  • 8. Jeon JY, Desalination, 296(-), 46 (2012)
  •  
  • 9. Lin DT, Cheng LP, Kang YJ, Chen LW, Young TH, J. Membr. Sci., 140(2), 185 (1998)
  •  
  • 10. Young TH, Huang JH, Chuang WY, Eur. Polym. J., 38, 63 (2002)
  •  
  • 11. Inghan KC, Bushy TF, Shahelstrom Y, Castino F, Ultrafiltration Membrane and Application, Plenum Press, New York, 1980.
  •  
  • 12. Basu S, Maes M, Cano-Odena A, Alaerts L, De Vos DE, Vankelecom IFJ, J. Membr. Sci., 344(1-2), 190 (2009)
  •  
  • 13. Han BX, Zhang DL, Shao ZQ, Kong LL, Lv SY, Desalination, 311(-), 80 (2013)
  •  
  • 14. Idris A, Yet LK, J. Membr. Sci., 280(1-2), 920 (2006)
  •  
  • 15. Hwang JR, Koo SH, Kim JH, Higuchi A, Tak TM, J. Appl. Polym. Sci., 60(9), 1343 (1996)
  •  
  • 16. Kim YJ, Jeon JY, Koo SH, Tak TM, Membrane J., 6, 10 (1996)
  •  
  • 17. Lafraeniere LY, Talboy FDF, Matsuura T, Sourirajan S, Ind. Eng. Chem. Res., 26, 2385 (1987)
  •  
  • 18. Matsuura T, Synthetic Membranes and Membrane Separation Processes, CRC Press, Boca Raton, FL, 1994.
  •  
  • 19. Jeon JY, Tak TM, J. Appl. Polym. Sci., 61(2), 371 (1996)
  •  
  • 20. Mathews AS, Kim I, Ha CS, Macromol. Res., 15(2), 114 (2007)
  •  
  • 21. Park JS, Chang JH, Polym.(Korea), 32(6), 580 (2008)
  •  
  • 22. Yanagishita H, Arai J, Sandoh T, Negishi H, Kitamoto D, Ikegami T, Haraya K, Idemoto Y, Koura N, J. Membr. Sci., 232(1-2), 93 (2004)
  •  
  • 23. Liaw DJ, Liaw BY, J. Polym. Sci. A: Polym. Chem., 35(8), 1527 (1997)
  •  
  • 24. Jeon JY, Tak TM, J. Appl. Polym. Sci., 61(13), 2345 (1996)
  •  
  • 25. Jeon JY, Membrane J., 14, 26 (2004)
  •  
  • 26. Han RL, Zhang SH, Hu LJ, Guan SS, Jian XG, J. Membr. Sci., 370(1-2), 91 (2011)
  •  
  • 27. Wu CR, Zhang SH, Yang DL, Jian XG, J. Membr. Sci., 326(2), 429 (2009)
  •  
  • 28. Snow MJH, deWinter D, Buckingham R, Campbell J, Wagner J, Desalination, 105, 57 (1996)
  •  
  • 29. Susanto H, Ulbricht M, J. Membr. Sci., 327(1-2), 125 (2009)
  •  
  • 30. Roberts RM, Gilbert JC, Rodewald LB, Wingrove AS, Modern Experimental Organic Chemistry, 4th ed., Saunders College Publishing, Philadelphia, 1985.
  •  
  • 31. Cheryan M, Ultrafiltration Handbook, Technomic Lancaster, Pennsylvania, 1986.
  •  
  • 32. Atkins PW, Physical Chemistry, 3rd ed., Freeman and Company, New York, 1986.
  •  
  • 33. Wienk IM, Boom RM, Beerlage MA, Bulte AM, Smolders CA, Strathmann H, J. Membr. Sci., 113(2), 361 (1996)
  •  
  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2024 Impact Factor : 0.6
  • Indexed in SCIE

This Article

  • 2016; 40(1): 154-161

    Published online Jan 25, 2016

  • 10.7317/pk.2016.40.1.154
  • Received on Oct 24, 2015
  • Accepted on Oct 30, 2015