Volume 7, Issue 1, January 2018, Page: 6-12
Synthesis of Moderate Water-Uptake and Low Methanol Permeable Polymer Electrolyte Membrane from Functionalized Polyisoprene Impregnated Carbon Nanotubes
Christopher A. Idibie, Department of Chemical Sciences, Faculty of Science, Edwin Clark University, Kiagbodo, Nigeria
Received: Oct. 16, 2017;       Accepted: Dec. 7, 2017;       Published: Jan. 2, 2018
DOI: 10.11648/j.ijmsa.20180701.12      View  2414      Downloads  145
The study of the synthesis of polymer electrolyte membrane exhibiting moderate water uptake and low methanol permeation for fuel cell application using functionalized polyisoprene impregnated with carbon nanotubes (CNTs) was carried out. The functionalization of the polymer with chlorosulphonic acid of different initial concentrations of 0.0013, 0.001, 0.0017, and 0.0023 mol/L at the minimum time of 1hr produced ion exchange capacities (IEC) of 1.22, 1.92, 2.74, and 4.92 mmol/g, respectively, and at the maximum sulphonation time of 18hrs the IEC were 7.74, 8.78, 11.10, and 16.93 mmol/g, respectively. Their corresponding degrees of sulphonation (DS) for 1hr were 3.53, 5.55, 7.91, and 14.21%, respectively, and while at 18hrs their corresponding DS were 22.35, 25.37, 32.04, and 48.88%, respectively, which implies that IEC and DS are directly proportional to the concentration of acid used and reaction time. Result also showed that synthesized membrane without carbon nanotubes absorbed so much of it weight in water; 31.34 and 73.97% of its weight in both 1 day and 6 days for membrane with 48.88% DS. Whereas the membrane that was impregnated with CNTs of the same DS exhibited a lesser absorption of 23.23 and 53.23% of its weight in both 1 day and 6 days, thereby reducing the high water uptake of the membrane that would have affected it negatively by 1.3 fold. Apart from the conductivity of the synthesized membrane witnessing an increase by 1 order with the membrane impregnated with CNTs from 10-3 S/cm to 10-2 S/cm, it was also found out that the methanol crossover was lower than that of commercial Nafion, where membrane impregnated with CNTs had methanol crossover improvement with a difference of 0.48 Mol/L over its counterpart without CNTs as a result of the presence of CNTs.
Polymer Electrolyte Membrane, Polyisoprene, Chlorosulphonic Acid, Ion Exchange Capacity, Degree of Sulphonation
To cite this article
Christopher A. Idibie, Synthesis of Moderate Water-Uptake and Low Methanol Permeable Polymer Electrolyte Membrane from Functionalized Polyisoprene Impregnated Carbon Nanotubes, International Journal of Materials Science and Applications. Vol. 7, No. 1, 2018, pp. 6-12. doi: 10.11648/j.ijmsa.20180701.12
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Wonbong, J, L. Choonkeun, S. Saimani, G. S. Yong, and H. Haksoo (2005). Thermal and hydrolytic stability of sulfonated polymide membranes with varying chemical structure. Polymer degradation and Stability 90, 431-440.
L. Xianguo, “Principles of fuel cells”, New York: Taylor and Francis group LLC, 2006, pp. 1-147.
Bai, Y, C. Wu, F. Wu, and B. Yi (2006). Carbon-supported platinum catalysts for onsite hydrogen generation from NaBH4 solution. Material letter, 60, 2236 – 2239.
Costamagna, P, S. Srinivasan (2001). Quantum jumps in the PEMFC science and technology from the 1960s to the year 2000. Part 1. Fundamental scientific aspect. Journal of Power Source, 102, 242–252.
Idibie, C. A, A. S. Abdulkareem, H. C. Vz. Pienaar, S. E Iyuke, and D. L. Van (2009). Synthesis of low methanol permeation polymer electrolyte membrane from polystyrene-butadiene rubber. Polymer-Plastics Technology and Engineering, 48, 1121 – 1129.
Yo, J. K, C. C. Won, I. W. Seong, H. H. Won (2004). Proton conductivity and methanol permeation in NafionTM/ORMOSIL prepared with various organic silanes. Journal of Membrane Science, 238, 213–222.
Gao, Y, P. R. Gilles, M. D. Guiver, X. Jian, S. D. Mikhailenko, K. S. Wang (2003). Sulfonation of poly (phthalazinones) with fuming sulfuric acid mixtures for proton exchange membrane materials. Journal of Membrane Science, 227, 39-50.
Walker, M, K. M. Baumgartner, M. Kaiser, J. Kerres, A. Ullrich, E. Rauchle (1999). Proton-conducting polymers with reduced methanol permeation. Journal of Applied Polymer Science, 74, 67–73.
Hikita, S, K. Yamane, Y. Nakajima (2001). Measurement of methanol crossover in direct methanol fuel cell. Japan society of Automotive Engineers Review, 22, 151–156.
Savadogo, O. and J. N. Mater (1998). Emerging membranes for electrochemical systems: (1) solid polymer electrolyte membrane for fuel cell systems. Electrochemical Systems, 1, 47-66.
Inzelt, M, M. Pineri, J. W. Schltze, and M. A. Vorotyntsev (2000). Electron and proton conducting polymers: recent development and prospects. Electrochemical Acta, 45, 2403.
Gautthier, S. and A. Eisenberg (1987). Vinylpyridinum ionmers. 2. Styrene–based ABA block copolymer. Macromolecules, 20, 760–767.
Zhou, Z, D. Peifer, and B. Chu (1994). Light scattering studies of block ionomer aggregation characteristics in nonplar solvent. Macromolecules, 27, 1428–1433.
Desjardins, A, and A. Eisenberg, (1991). Colloidal properties of block ionomers.1. Characterization of reverse micelles of styrene-b-metal methacrylate diblocks by size-exclusion chromatography. Macromolecules, 24, 5779–5790.
Weiss, R. A, A. Sen, L. A. Pottik, and C. L. Willis (1990). Block copolymer ionomers. Thermoplastic elastomers possessing two distinct physical networks. Polymer Communication, 31, 220–223.
Wang, F, J. Li, T. Chen, J. Xu (1998). Sodium sulfonate-functionalised poly (ether ether ketone)s. Macromolecular Chemistry and Physics, 199, 1421–1426.
Ueda, M, H. Toyota, T. Ouchi, J. Sugiyama, K. Yonetake (1993). Synthesis and characterization of aromatic poly (ether sulfone)s containing pendant sodium sulfonate groups. Journal of Polymer Science, 31, 853–858.
Wang, F, M. Hickner, J. E. Mcgrath (2002). Direct polymerization of sulfonated poly (arylene ether sulfone) random (statistical) copolymers: Candidates for new proton exchange membranes. Journal of Membrane Science 197, 231–242.
Genies, C, R. Mercier, B. Sillion, N. Cornet, G. Gebel, M. Pineri (2001). Soluble sulfonated naphthalenic polyimides as materials for proton exchange membranes. Polyer, 42, 359–373.
Allam, C, K. J. Liu, D. Mohanty (1999). Preparation and properties of novel aromatic poly (thioethers) derived from 4,40-thiobisbnzenethiol. Macromolecular of Chemistry and Physics, 200, 1854–1862.
Honma, I, S. Nomura, H. Nakajima (2001). Proton conducting organic/inorganic nanocomposite for polymer electrolyte membrane. Journal of Membrane Science, 185, 83–94.
Staiti, P, A. S. Arico`, V. Baglio, F. Lufrano, E. Passalacqua, V. Antonucci (2001). Hybrid Nafion-silica membranes doped with heteropolyacids for application in direct methanol fuel cells. Solid State Ion 2001, 145, 101–107.
Bebin, P, M. Caravanier, and H. Galiano (2005). Nafion/Clay –SO3H membrane for proton exchange membrane fuel cell application. Journal of Membrane Source, 278, 35- 42.
Idibie, C. A (2017). Reaction Mechanism and Kinetics of Sulphonated Polyisoprene Elastomer for Proton Exchange Membrane. Journal of Chemical Engineering and process Techniques, 3(2), 1041.
Idibie, C. A (2017). Properties of Sulphonated Polyisoprene Elastomer for Possible Proton Exchange Membrane Fuel Cell. Journal of Chemical Society of Nigeria, 42(2), 76-80.
Sageetha, D (2005). Conductivity and solvent uptake of proton exchange membrane based on polystyrene(ethelene-butadiene)polystyrene triblock polymer. European polymer Journal, 4, 2644-2652
Parnian, M. J, F. Gashoul, and S. Rowshanzamir (2016). Studies on the SPEEK membrane with low degree of sulfonation as a stable proton exchange membrane for fuel cell applications. Iranian Journal of Hydrogen and Fuel Cell 3(3), 221-232.
Sayadi, P, S. Rowshanzamir and M. J. Parnian (2016). Study of hydrogen crossover and proton conductivity of self-humidifying nanocomposite proton exchange membrane based on sulfonated poly (ether ether ketone). Energy, 94, 292-303.
Shen, M. S. Roy, J. W. Kuhlmann, K. Scott, K. Lovell, and J. A. Horsfall, (2005). Grafted polymer electrolyte membrane fir direct methanol fuel cells. Journal of Membrane Science, 251, 121-130.
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