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Type: Journal article
Title: Composite electrolyte membranes from partially fluorinated polymer and hyperbranched, sulfonated polysulfone
Author: Subianto, S.
Choudhury, N.
Dutta, N.
Citation: Nanomaterials, 2014; 4(1):1-18
Publisher: MDPI
Issue Date: 2014
ISSN: 2079-4991
Statement of
Surya Subianto, Namita Roy Choudhury and Naba Dutta
Abstract: Macromolecular 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.
Keywords: Membrane; fluoropolymer; polymer electrolyte; hyperbranched polysulfone; polymer blends
Rights: © 2013 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (
DOI: 10.3390/nano4010001
Grant ID: ARC
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