subianto-compositeelectrolyte-2014.pdf (1.9 MB)
Composite electrolyte membranes from partially fluorinated polymer and hyperbranched, sulfonated polysulfone
journal contribution
posted on 2013-12-01, 00:00 authored by Surya SubiantoSurya Subianto, N Choudhury, N DuttaMacromolecular modification of poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF) was done with various proportions of sulfonic acid terminated, hyperbranched polysulfone (HPSU) with a view to prepare ion conducting membranes. The PVDF-co-HFP was first chemically modified by dehydrofluorination and chlorosulfonation in order to make the membrane more hydrophilic as well as to introduce unsaturation, which would allow crosslinking of the PVDF-co-HFP matrix to improve the stability of the membrane. The modified samples were characterized for ion exchange capacity, morphology, and performance. The HPSU modified S-PVDF membrane shows good stability and ionic conductivity of 5.1 mS cm−1 at 80 °C and 100% RH for blends containing 20% HPSU, which is higher than the literature values for equivalent blend membranes using Nafion. SEM analysis of the blend membranes containing 15% or more HPSU shows the presence of spherical domains with a size range of 300–800 nm within the membranes, which are believed to be the HPSU-rich area.
History
Journal
NanomaterialsVolume
4Issue
1Season
Nanomaterials in Energy Conversion and StoragePagination
1 - 18Publisher
M D P I AGLocation
Basel, SwitzerlandPublisher DOI
ISSN
2079-4991Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2013, The AuthorsUsage metrics
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membranefluoropolymerpolymer electrolytehyperbranched polysulfonepolymer blendsScience & TechnologyPhysical SciencesTechnologyChemistry, MultidisciplinaryNanoscience & NanotechnologyMaterials Science, MultidisciplinaryPhysics, AppliedChemistryScience & Technology - Other TopicsMaterials SciencePhysicsPROTON-EXCHANGE MEMBRANESACID TERMINAL GROUPSPOLY(VINYLIDENE FLUORIDE)POLY(ETHER SULFONE)FUEL-CELLSCOPOLYMERSBLENDSFILMS
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