INEXPENSIVE PROTON EXCHANGE MEMBRANE SYNTHESIS BY SULFONATION OF COMMERCIALLY AVAILABLE POLYCARBONATE

Authors

  • T. A. Sherazi Department of Chemistry, Govt. College University, Lahore, Pakistan
  • N. Siddique Chemistry Division, PINSTECH, P.O. Nilore, Islamabad, Pakistan
  • M. A. Kashmiri Department of Chemistry, Govt. College University, Lahore, Pakistan
  • S. Ahmad Chemistry Division, PINSTECH, P.O. Nilore, Islamabad, Pakistan

Abstract

Commercially available thermoplastic, bisphenol polymer (polycarbonate) was sulfonated with various reagents to introduce sulfonic acid group (SO3H) under optimum conditions. Subsequently modified polymer was studied for its physical and chemical properties needed for its potential use as PEM in Fuel Cells (FCs). Fourier Transform Infrared (FT-IR) and X-ray Diffraction (XRD) were performed to confirm the occurrence of sulfonation. Differential Thermal Analysis (DTA) and Themogravimetric Analysis (TGA) were used to determine the effects of sulfonation on glass transition temperature (Tg) and thermal stability of modified polymer. The Ion Exchange Capacity (IEC) and Degree of Substitution (DS) of sulfonic acid group were determined using standard procedure. Swelling properties were tested using water soaking. Scanning Electron Microscopy (SEM) was utilized to study the morphology of the polymeric membrane both before and after sulfonation. The results reveal that proper controlled sulfonation of bisphenol polymer can be a viable substitute for NAFION owing to its comparable IEC (1.15 meq/g), DS, water uptake (35%), good mechanical properties/ thermal stability and above all low cost of production.

References

V. Mehta and JS. Cooper, J. Power Sources 114 (2003) 32.

W. Vielstich, A. Lamm, H. Gasteiger (Eds.), Handbook of Fuel Cells–Fundamentals, Technology, Applications, Wiley, (2003).

HR. Allcock, AH. Michael, MA. Catherine, NL. Serguei, YZ. Xiangyang, C. Elena and W. Jamie, J. Membr. Sci., 201 (2002) 47.

H.L. Yeager and A. Steck, J. Electrochem. Soc. 128, No. 9 (1981) 1880.

A.J. Appleby and F.R. Foulkes, Fuel Cell Handbook, Van Nostrand Rein-hold, New York (1989) p. 762.

W. Becker and G. Schmidt-Naake, Chem. Eng. Technol. 25 (2002) 36.

B. Smitha, S. Sridhar and A.A. Khan, J. Membr. Sci., 225 (2003) 63.

F. Lufrano, G. Squadrito, A. Patti and E. Passalacqua, J. Appl. Polym. Sci. 77, No. 6 (2000) 1250.

M.J. Coplan and G. Gotz, Heterogeneous sulfonation process for difficultly sulfonatable poly (ether sulfone), US Patent No. 4, 413 (1983) 106.

Y.S. Kim, F. Wang, M. Hickner, S. McCartney, Y.T. Hang, W. Harrison, T.A. Zawodzinski, J.E. McGrath, J. Polym. Sci. B: Polym. Phys., 41 (2003) 2816.

C. Ma, L. Zhang, S. Mukerjee, D. Ofer and B. Nair, J. of Membr. Sci., 219 (2003) 123.

L. Jorissen, V. Gogel, J. Kerres and J. Garche, J. Power Sources, 105, No. 2 (2002) 267.

W. Zhang, V. Gogel, K. A. Friedrich and J. Kerres, J. Power Sources, 155 (2006) 3.

B. Bauer, D.J. Jones, J. Roziere, L. Tchicaya, G. Alberti, M. Casci-ola, L. Massinelli, A. Peraio, S. Besse and E. Ramunni, J. New Mater. Electrochem. Syst., 3, No. 2 (2000) 93.

K.D. Kreuer, J. Membr. Sci., 185 (2001) 29.

M.V. Rouilly, E.R kotz, O. Hass, G.G.Scherer and A. Chapiro, J. of Membr. Sci., 81 (1993) 89.

T. Yamaki, M. Asano, Y. Maekawa, Y. Morita, T. Suwa, J. Chen, N. Tsubokawa, K. Kobayashi, H. Kubota and M. Yoshida, Radiat. Phys. Chem., 67 (2003) 403.

F.N. Buchi, B. Gupta, O. Haas and G.G. Scherer, Electrochim. Acta, 40, No. 3 (1995) 345.

S. Hietala, M. Koel, E. Skou, M. Elomaa, and F. Sundholm, J. Mater. Chem., 8, No. 5 (1998) 1127.

B. Smitha, S. Sridhar and A. A. Khan, Macromolecules, 37 (2004) 2233.

S.R. Samms, S. Wasmus and R.F. Savinell, J. Electrochem. Soc., 143, No. 4 (1996) 1225.

Q.H. Guo, P.N. Pintauro, H. Tang and S. O’Connor, J. Membr. Sci., 154, No. 2 (1999) 175.

R. Carter, R. Wycisk, H. Yoo and P.N. Pintauro, Electrochem. Solid State Lett., 5 No. 9 (2002) A195.

R.W. Kopitzke, C.A. Linkous and G.L. Nelson, Polymer Degradation and Stability, 67 (2000) 335.

W.J. Lee, Y.J. Kim and S. Kaang, Synthetic Metals, 113 (2000) 237.

T.Y. Chen and J. Leddy, Langmuir, 16 (2000) 2866.

A. Clearfield and J.A. Stynes, J. Inorg. Nucl. Chem., 26 (1964) 117.

C. Yang, S. Srinivasan, B. Bocarsly, S. Tulyani and J.B. Benziger C, J. Membr. Sci., 237 (2004) 145.

N. Gunduz, Synthesis and Characterization of Sulfonated Polyimides as Proton Exchange Membranes for Fuel Cells , Ph.D. Thesis, VPI & SU, 2001.

S.R. Samms, S. Wasmus and R.F. Savinell, J. Electrochem. Soc., 143 (1996) 1498.

A.M. Affoune, A. Yamada and M. Umeda, Journal of Power Sources, 148 (2005) 9.

N. H. Jalani, K. Dunn and R. Datta. Electrochimica Acta, 51 (2005) 553.

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Published

03-07-2020

How to Cite

[1]
T. A. Sherazi, N. Siddique, M. A. Kashmiri, and S. Ahmad, “INEXPENSIVE PROTON EXCHANGE MEMBRANE SYNTHESIS BY SULFONATION OF COMMERCIALLY AVAILABLE POLYCARBONATE”, The Nucleus, vol. 44, no. 3-4, pp. 115–123, Jul. 2020.

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