| People | Locations | Statistics |
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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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Imrie, Corrie
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2024A design approach to obtaining highly polar liquid crystal dimerscitations
- 2021Twist-Bend Nematic Glassescitations
- 2021Multiple Polar and Non-polar Nematic Phasescitations
- 2019Augmenting Bragg Reflection with Polymer-sustained Conical Helixcitations
- 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
- 2013A new polymer electrolyte based on a discotic liquid crystal triblock copolymercitations
- 2012Synthesis and characterisation of side chain liquid crystal copolymers containing sulfonic acid groupscitations
- 2011New insights from variable-temperature and variable-pressure studies into coupling and decoupling processes for ion transport in polymer electrolytes and glassescitations
- 2010Preparation and thermal characterisation of films containing liquid crystals in a cellulose acetate substrate for externally regulated applicationscitations
- 2007Liquid crystal dimers and higher oligomerscitations
- 2004Discotic side group liquid crystal polymer electrolytes
- 2003Application of complementary experimental techniques to characterization of the phase behavior of [C(16)mim][PF6] and [C(14)mim][PF6]citations
- 2001Highly non-linear liquid crystal tetramerscitations
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.