Korean Journal of Chemical Engineering, Vol.24, No.6, 1101-1105, November, 2007
Modification of Nafion membranes by incorporation of cationic polymers for reduction of methanol permeability
E-mail:
A small amount of basic polymer was incorporated in the Nafion membrane. Compared with the re-cast Nafion membrane, the Nafion/basic polymer membrane reduced the methanol permeability considerably. The equilibrium water uptake and proton conductivity decreased, but the thermal and mechanical stability was enhanced with increasing concentration of basic polymer. These property changes were caused by formation of cation/anion complex between acidic Nafion and basic polymer molecules. The effects of the types and molecular weights of basic polymers on the methanol permeability and proton conductivity were not significant.
- Kordesch K, Simader G, Fuel cells and their applications, VCH, Weinheim (1996)
- Larminie J, Dicks A, Fuel cell systems explained, John Wiley & Sons Inc., England (2000)
- Perry ML, Fuller TF, J. Electrochem. Soc., 149(7), S59 (2002)
- Arico AS, Srinivasan S, Antonucci V, Fuel Cells, 1, 134 (2001)
- Heinzel A, Barragan VM, J. Power Sources, 84(1), 70 (1999)
- Sauk J, Byun J, Kang Y, Kim H, Korean J. Chem. Eng., 22(4), 605 (2005)
- Carretta N, Tricoli V, Picchioni F, J. Membr. Sci., 166(2), 189 (2000)
- Gebel G, Polymer, 41(15), 5829 (2000)
- Dimitrova P, Friedrich KA, Vogt B, Stimming U, J. Electroanal. Chem., 532(1-2), 75 (2002)
- Dimitrova P, Friedrich KA, Vogt B, Stimming U, J. Electroanal. Chem., 532(1-2), 75 (2002)
- Kim J, Kim B, Jung B, J. Membr. Sci., 207(1), 129 (2002)
- Kreuer KD, J. Membr. Sci., 185(1), 29 (2001)
- Hsu WY, Barkley JR, Meakin P, Macromolecules, 13, 198 (1980)
- Gierke TD, Munn GE, Wilson FC, J. Polym. Sci. B: Polym. Phys., 19, 1687 (1981)
- Bae B, Ha HY, Kim D, J. Electrochem. Soc., 152(7), 1366 (2005)