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https://hdl.handle.net/2440/112244
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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 2079-4991 |
Statement of Responsibility: | 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 (http://creativecommons.org/licenses/by/3.0/). |
DOI: | 10.3390/nano4010001 |
Grant ID: | ARC |
Published version: | http://dx.doi.org/10.3390/nano4010001 |
Appears in Collections: | Aurora harvest 8 Chemical Engineering publications |
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hdl_112244.pdf | Published version | 1.9 MB | Adobe PDF | View/Open |
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