PREPARATION AND CHARACTERIZATION OF NAFION COMPOSITE MEMBRANES CONTAINING MICRO AND NANOCRYSTALLINE CELLULOSE FOR DIRECT METHANOL FUEL CELL APPLICATIONS
Keywords:
Microcrystalline cellulose, Nanocrystalline cellulose, Nafion, Direct methanol fuel cellAbstract
Thisworkdemonstratedtheuseofamicrocrystallinecellulose(MCC)andananocrystallinecellulose(NCC)reinforcedwithNafion(NF)compositemembranefordirectmethanolfuelcells(DMFC).
ThestudycomparedmembranespropertiesofMCC/NFcompositemembraneandNCC/NFcompositemembranewithrecastedNFmembranebyex-situtest.TheresultofSEM/EDSwithelementalmappingshowedthatNCCdispersionwithinthemembranewasbetterthanthatofMCC.ThewateruptakeresultshowedthatNCC/NFcompositem
embranewashigherthanthatofMCC/NFmembrane.ThesolubilitypropertyofNCC/NFcompositemembranewasbetterthanthatofMCC/NFmembrane(bothcompositemembraneswerelessthan5%solubility).ItwasfoundthationexchangecapacityofrecastedNFmembranewashigherthanbothcompositemembranesbutchemicaldegradationofbothcompositemembraneswaslowerthanthatofrecastedNFmembrane.ForMeOHpermeability,itwasfoundthataddingcelluloseonNFreducedMeOHcrossoverforbothcompositemembranesandMCC/NFcompositemembranehadthelowestMeOHpermeabilityamongall.
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