화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.36, No.5, 564-572, September, 2012
Export Citation
막 축전식 탈염용 비불소계 아민화 Poly(vinylbenzyl chloride-co-ethyl methacrylate-co-styrene) 음이온교환막의 합성 및 특성
Synthesis and Properties of Nonfluoro Aminated Poly(vinylbenzyl chloride-co-ethyl methacrylate-co-styrene) Anion Exchange Membranes for MCDI Process
구진선, 곽노석, 황택성1, †
  • 충남대학교 바이오응용화학과
  • 1충남대학교 화학공학과
Jin Sun Koo, Noh-Seok Kwak, and Taek Sung Hwang1, †
  • Department of Applied Chemistry and Biological Engineering, College of Engineering, Chungnam National University, 79 Daehang-no, Yuseong-gu, Daejeon 305-764, Korea
  • 1Department of Chemical Engineering, College of Engineering, Chungnam National University, 79 Daehang-no, Yuseong-gu, Daejeon 305-764, Korea
E-mail:
초록
본 연구에서는 막축전식 탈염(membrane capacitive deionization, MCDI) 공정용 음이온교환막의 제조를 위하여 vinylbenzyl chloride-co-ethyl methacrylate-co-styrene(VBC-EMA-St) 공중합체를 합성하였으며, 아민화 반응과 열처리를 통하여 음이온교환막을 제조하였다. 구조확인을 위하여 FTIR 분석을 하였고, GPC와 TGA를 통하여 합성한 고분자의 분자량과 분자분포, 열안정성을 분석하였으며, 함수율 및 이온교환용량을 측정하였다. 또한 LCR meter로 전기저항을 측정하고, MCDI 공정에 적용하기 위하여 제조한 음이온교환막을 충방전 시험 측정하였다. 이온교환용량, 함수율, 전기저항, 분자량은 각각 1.69 meq/g, 23.7%, 1.61 Ω·cm, 3.4×104 g/mol이었으며, CDI 충방전 시험 결과 상용화막인 AMX보다 우수한 성능을 나타내었다.
A terpolymer of vinylbenzyl chloride-co-ethyl methacrylate-co-styrene (VBC-EMA-St) was prepared for membrane capacitive deionization (MCDI) by radical polymerization and amination reaction of various amination times. Nonfluoro aminated VBC-EMA-St anion-exchange membranes were characterized by Fourier transform infrared (FTIR) spectrometry. Molecular weight, polydispersity and thermal stability were obtained by gel permeation chromatography (GPC) and thermogravimetric analysis (TGA). The basic properties such as water uptake, ion exchange capacity, electrical resistance and CDI charge-discharge current were measured. The optimal values of ion exchange capacity, water uptake, electrical resistance and molecular weight of synthesized anion-exchange membrane were 1.69 meq/g, 23.7%, 1.61 Ω·cm and 3.4×104 g/mol, respectively. As compared with conventional membrane, the pattern of cyclic charge-discharge current of synthesized anion-exchange membrane indicated efficient electrosorption and desorption.
Keywords:VBC-EMA-St;anion exchange membrane;water uptake;MCDI;electrical resistance.
  1. Khawaji AD, Kutubkhanah IK, Wie JM, Desalination, 221(1-3), 47 (2008)
  2. Kim YM, Kim SJ, Kim YS, Lee S, Kim IS, Kim JH, Desalination, 238(1-3), 312 (2009)
  3. Kim KS, Kim SH, Jung IH, J. Korean Ind. Eng. Chem., 12(5), 560 (2001)
  4. Charcosset C, Desalination, 245(1-3), 214 (2009)
  5. Lee KP, Arnot TC, Mattia D, J. Membr. Sci., 370(1-2), 1 (2011)
  6. Cho CH, Oh KY, Kim SK, Yeo JG, Sharma P, J. Membr. Sci., 371(1-2), 226 (2011)
  7. Nagarale RK, Gohil GS, Shahi KV, Adv. Colloid Interface Sci., 119, 97 (2006)
  8. Santarosa VE, Peretti F, Caldart V, Zoppas J, Zeni M, Desalination, 149(1-3), 389 (2002)
  9. Kariduraganavar MY, Nagarale RK, Kittur AA, Kulkarni SS, Desalination, 197(1-3), 225 (2006)
  10. Kang MS, Choi YJ, Choi IJ, Yoon TH, Moon SH, J. Membr. Sci., 216(1-2), 39 (2003)
  11. Choi YJ, Kang MS, Moon SH, J. Appl. Polym. Sci., 88(6), 1488 (2003)
  12. Neburchilov V, Martin J, Wang HJ, Zhang JJ, J. Power Sources, 169(2), 221 (2007)
  13. Savari S, Sachdeva S, Kumar A, J. Membr. Sci., 310(1-2), 246 (2008)
  14. Kim YJ, Choi JH, Appl. Chem. Eng., 21(1), 87 (2010)
  15. Biesheuvel PM, van der Wal A, J. Membr. Sci., 346(2), 256 (2010)
  16. Xu TW, Yang WH, J. Membr. Sci., 203(1-2), 145 (2002)
  17. Kemperman AJB, Handbook on Bipolar Membrane Technology, Twente University Press, Enschede, 9 (2000)
  18. Choi Y, Lee HS, Hwang TS, Polymer(Korea)., 33, 608 (2007)
  19. Cho IH, Baek KW, Lim YM, Nho YC, Hwang TS, Polym.(Korea), 31(3), 239 (2007)
  20. Jeong BY, Song SH, Baek KW, Cho IH, Hwang TS, Polym.(Korea), 30(6), 486 (2006)
  21. Kim DJ, Chang BJ, Kim JH, Lee SB, Joo HJ, Memb. J., 16, 221 (2006)
  22. Choi KJ, Choi JH, Hwang EH, Rhee YW, Hwang TS, Polym.(Korea), 31(3), 247 (2007)
  23. Fu RQ, Woo JJ, Seo SJ, Lee JS, Moon SH, J. Membr. Sci., 309(1-2), 156 (2008)
  24. Summer MJ, Harrison WL, Weyers RM, Kim YS, McGrath JE, Riffle JS, Brink A, Brink MH, J. Membr. Sci., 239(2), 199 (2004)
  25. Kwak NS, Koo JS, Hwang TS, Choi EM, Desalination., 10.1016/j.desal.2011.09.046 (2012)
  26. Xu HK, Fang J, Guo ML, Lu XH, Wei XL, Tu S, J. Membr. Sci., 354(1-2), 206 (2010)
  27. Tsai CE, Lin CW, Hwang BJ, J. Power Sources, 195(8), 2166 (2010)
  28. Yeom CK, Lee KH, J. Membr. Sci., 109(2), 257 (1996)
  29. Shin KS, Choi EM, Hwang TS, J. Appl. Polym. Sci., 119(6), 3180 (2011)