Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 133, Issue 15, Pages -Publisher
WILEY-BLACKWELL
DOI: 10.1002/app.43294
Keywords
blends; membranes; properties and characterization
Categories
Funding
- Council of Scientific and Industrial Research (CSIR), India [09/028 (0901)/2012-EMR-I]
- Ministry of New and Renewable Energy (MNRE), Govt. of India [102/56/2009-NT]
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Partially sulfonated poly(vinylidene fluoride-co-hexafluoro propylene)/partially sulfonated polyaniline (SPVdF-co-HFP/SPAni) binary blend membranes have shown promising results in terms of low methanol permeability and high membrane selectivity compared to Nafion-117 membrane. However, the proton conductivity and IEC of this binary blend membrane was much lower than Nafion-117. It was found that incorporation of minimal quantity of Nafion within SPVdF-co-HFP/SPAni blend membrane at a constituent weight % ratio of SPVdF-co-HFP:SPAni:Nafion=50:40:10 induced significant improvements in ion-exchange capacity (IEC), proton conductivity and tensile strength over that of the binary blend membrane. In addition, the SPVdF-co-HFP/SPAni/Nafion ternary blend membrane exhibited much lower methanol permeability, higher membrane and relative selectivities and comparable IEC to Nafion-117. In effect, presence of minimal quantity of Nafion induced significant positive attributes to the ternary blend membrane; and assisted in reaching a balance between material cost and properties. (c) 2015 Wiley Periodicals, Inc. .
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