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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Martinez-Felipe, Alfonso
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2020Physico-mechanical behaviour of Oil Palm Broom Fibres (OPBF) as eco-friendly building materialcitations
- 2015New insights into the liquid crystal behaviour of hydrogen-bonded mixtures provided by temperature-dependent FTIR spectroscopycitations
- 2013Study of Structure Formation in Side-Chain Liquid Crystal Copolymers by Variable Temperature Fourier Transform Infrared Spectroscopycitations
- 2013Spectroscopic and thermal characterisation of the swelling behaviour of Nafion membranes in mixtures of water and methanolcitations
- 2013Characterization of Functionalized Side-Chain Liquid Crystal Methacrylates Containing Nonmesogenic Units by Dielectric Spectroscopycitations
- 2013Spectroscopic and thermal characterisation of the swelling behaviour of nafion membranes in mixtures of water and methanolcitations
- 2013Characterization of Functionalized Side-Chain Liquid CrystalMethacrylates Containing Nonmesogenic Units by DielectricSpectroscopycitations
- 2012Synthesis and characterisation of side chain liquid crystal copolymers containing sulfonic acid groupscitations
- 2012A methodology to assess the energetic valorization of bio-based polymers from the packaging industry: pyrolysis of reprocessed polylactidecitations
- 2011Liquid crystal polymers and ionomers for membrane applicationscitations
- 2010Preparation and thermal characterisation of films containing liquid crystals in a cellulose acetate substrate for externally regulated applicationscitations
Places of action
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article
Spectroscopic and thermal characterisation of the swelling behaviour of Nafion membranes in mixtures of water and methanol
Abstract
The spectroscopic and thermal properties of swollen Nafion membranes in methanol aqueous mixtures were investigated to understand the behavior of commercial electrolytes in the presence of polar solvents. Several differences were observed in the absorption processes depending on the composition of the solvent. Deconvolution methods were applied to study specific contributions of solvents and polymer groups based on Fourier transform infrared spectroscopy and thermogravimetric analysis. The results evidence compositional effects on the interactions between solvents and Nafion. A major influence of the nonpolar domains (hydrophobic regions) in the absorption of methanol together with a reduction of the interactions with sulfonate groups was observed. Such changes are accompanied by a modification of the cluster morphology of the equilibrated membranes evaluated by differential scanning calorimetry. These findings can be useful to improve the knowledge on Nafion's microstructure in the presence of polar solvents.