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Stability of SPEEK-Triaminopyrimide Polymer Electrolyte Membrane for Direct Methanol Fuel
Cell Application
(Kestabilan Polimer Membran Elektrolit SPEEK-Triminopyrimidine
untuk Aplikasi Sel Bahan
Api Metanol Terus) JUHANA JAAFAR1*, A.F. ISMAIL1, T. MATSUURA2& M.N.A.
MOHD
NORDDIN1
1Advanced
Membrane Technology Research Centre (AMTEC), Universiti Teknologi
Malaysia 81310
Johor Bahru, Johor, Malaysia
2Industrial
Membrane Research Laboratory, Department of Chemical Engineering
University
of Ottawa, 161 Louis Pasteur St. Ottawa ON, KIN 6N5, Canada
Diserahkan:
29 Ogos 2012/Diterima: 13 Jun 2013
ABSTRACT
Modification of sulfonated poly (ether ether ketone) (SPEEK)
membrane was conducted by incorporating Cloisite 15A® clay and
2,4,6-triaminopyrimidine (TAP) via solution intercalation method. The
effect of the Closite and TAP introduction was evaluated in terms of the
membrane’s physicochemical and hydration properties. The membrane’s properties
were compared among the SPEEK based membranes, including parent SPEEK, SPEEK/Cloisite
and SPEEK/Cloisite
15A®/TAP.
The uniform dispersion of Cloisite 15A® particles in SPEEK polymer matrices
was confirmed by SEM analysis. The stability in water; in terms
of dimensional change and dissolution, of the modified membrane was
investigated and compared to the parent SPEEK membrane. SPEEK/Cloisite 15A®/TAP nanocomposite
membrane exhibited the highest selectivity by means of the ratio of proton
conductivity to methanol permeability. Owing to its higher proton conductivity
and significantly lower methanol permeabilities and high stability in water
environment, SPEEK/Cloisite
15A®/TAP nanocomposite
membrane was found to be a potential alternative polymer electrolyte membrane
for DMFC applications.
Keywords: Cloisite; direct methanol fuel cell; nanocomposite
membranes; sulfonated poly (ether ether ketone); triaminopyrimidine
ABSTRAK
Pengubahsuaian terhadap membran sulfona poli (eter eter kiton) (SPEEK)
telah dilakukan dengan memasukkan tanah liat Cloisite 15A® dan 2,4,6-triaminopyrimidine
(TAP)
melalui kaedah penyisipan larutan. Kesan pengenalan Cloisite 15A® dan TAP dinilai berdasarkan
sifat fizik-kimia dan penghidratan membran. Hasil keputusan sifat membran
dibandingkan antara membran-membran berasaskan SPEEK, termasuklah SPEEK induk, SPEEK/Cloisite
dan SPEEK/Cloisite
15A®/TAP.
Penyebaran sekata partikel-partikel Cloisite 15A® di dalam matriks
polimer SPEEK telah dikenal pasti melalui analisis SEM. Kestabilan dalam air
daripada segi perubahan bentuk dan keterlarutan, bagi membran yang diubah suai
dikaji dan dibandingkan dengan membran SPEEK induk. Membran komposit nano SPEEK/Cloisite
15A®/TAP mempamerkan
kememilihan yang paling tinggi dalam erti kata nisbah kekonduksian proton
terhadap kebolehtelapan metanol. Dengan kelebihan kekonduksian proton dan kadar
kebolehtelapan metanol yang lebih rendah serta kestabilan yang tinggi dalam
persekitaran air, maka membran komposit nano telah dikenal pasti boleh menjadi
membran polimer elektrolit alternatif untuk aplikasi-aplikasi DMFC.
Kata kunci: Cloisite;
membran komposit nano; sel bahan api metanol terus; sulfona poli (eter eter
kiton); triaminopyrimidine
Akiba, C., Watanabe, K., Nagai, K., Hirata, Y.
& Nguyen, Q.T. 2006. Preparation and solubility of water-methanol mixtures
in sulfonated poly(Etherketone) containing a cardo-ring structure. Journal
Applied Polymer Science 100: 1113-1123.
Cervantes-Uc, J.M., Cauich-Rodr´?guez, J.V.,
Torres, H.V., Garfias-Mes´?as, L.F. & Paul, D.R. 2007. Thermal degradation
of commercially available organoclays studied by TGA-FTIR. Thermochimica
Acta 457: 92-102.
Chuang, S.W., Hsu, S.L.C. & Hsu, C.L. 2007.
Synthesis and properties of fluorine-containing polybenzimidazole/
montmorillonite nanocomposite membranes for direct methanol fuel cell
applications. Journal of Power Sources 168: 172-177.
Frounchi, M., Dadbin, S., Salehpour, Z. &
Noferesti, M. 2006. Gas barrier properties of PP/EPDM blend nanocomposite. Journal
of Membrane Science 282: 143-248.
Gao, Y., Robertson, G.P., Guiver, M.D., Jian,
X., Mikhailenko, S.D., Wang, K. & Kaliaguine, S. 2003. Sulfonation of
poly(Phthalazinones) with fuming sulfuric acid mixtures for proton exchange
membrane materials. Journal of Membrane Science 227: 39-50.
Gaowen, Z. & Zhentao, Z. 2005.
Organic/inorganic composite membranes for application in DMFC. Journal of
Membrane Science 261: 107-113.
Genne, I., Kuypers, S. & Leysen, R. 1996. Effect of the addition of ZrO2 to polysulfone based UF membranes. Journal of Membrane Science 113: 343-350. Hasani-Sadrabadi, M.M., Dashtimoghadam, E., Sarikhani, K., Majedi, F.S. & Khanbabaei, G. 2010. Electrochemical investigation of sulfonated poly(ether ether ketone)/clay nanocomposite membranes for moderate temperature fuel cell applications. Journal of Power Sources 195: 2450-2456. Ismail, A.F., Othman, N.H. & Mustafa, A. 2009. Sulfonated polyether ether ketone composite membrane using tungstosilicic acid supported on silica-aluminium oxide for direct methanol fuel cell (DMFC). Journal of Membrane Science 329: 18-29. Jaafar, J., Ismail, A.F. & Matsuura, T. 2009. Preparation and barrier properties of SPEEK/Cloisite 15A®/TAP nanocomposite membrane for DMFC application. Journal of Membrane Science 345: 119-127. Kim, T.K., Kang, M., Choi, Y.S., Kim, H.K., Lee, W., Chang, H. & Seung, D. 2007. Preparation of nafion-sulfonated clay nanocomposite membrane for direct methanol fuel cells via a film coating process. Journal of Power Sources 165: 1-8. Li, L., Xu, L. & Wang, Y. 2003. Novel proton conducting composite membranes for direct methanol fuel cell. Materials Letter 57: 1406-1410. Nagarale, R.K., Shin, W. & Singh, P.K. 2010. Progress in ionic organic-inorganic composite membranes for fuel cell applications. Polymer Chemistry 1: 388-408. Roelofs, K.S., Hirth, T. & Schiestel, T. 2010. Sulfonated poly(ether ether ketone)-based silica nanocomposite membranes for direct methanol fuel cells. Journal of Membrane Science 346: 215-226. Song, M.K., Park, S.B., Kim, Y.T., Kim, K.H., Min, S.K. & Rhee, H.W. 2004. Characterization of polymer-layered silicate nanocomposite membranes for direct methanol fuel cells. Electrochimica Acta 50: 639-643. Wang, M. & Dong, S. 2007. Enhanced electrochemical properties of nanocomposite polymer electrolyte based on copolymer with exfoliated clays. Journal of Power Sources 170: 425- 432. Yang, T. 2008. Preliminary Study of SPEEK/PVA blend membranes for DMFC applications. International Journal Hydrogen Energy 33: 6772-6779.
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