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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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Simha Martynková, Gražyna
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2023Nanocomposite PVDF Membrane for Battery Separator Prepared via Hot Pressingcitations
- 2018Graphite an exfoliated and organomodified filler for polymeric nanocomposites
- 2014Cobalt-organovermiculite arrangement and mechanical properties: models and experiments
- 2014Structural characteristics of cordierite/steatite ceramics sintered from mixtures containing pore-forming organovermiculitecitations
- 2010Vermiculite filler for polymeric nanocomposites: thermal and dispersion study
- 2009Preparation and characterization of porous cordierite for potential use in cellular ceramicscitations
- 2009An effective route to montmorillonite intercalation with imidazole complexes : experiment and theorycitations
- 2008Silver nanoparticles/montmorillonite composites prepared using nitrating reagent at water and glycerolcitations
- 2008Fluorescence and structure of methyl red-clay nanocompositescitations
- 2007Structural ordering of organovermiculite: Experiments and modelingcitations
- 2006Identification of carbon forms and other phases in automotive brake composites using multiple analytical techniquescitations
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article
Nanocomposite PVDF Membrane for Battery Separator Prepared via Hot Pressing
Abstract
<jats:p>Polyvinylidene fluoride (PVDF) is one of the materials most commonly used in membrane separators. The structures of pristine PVDF and PVDF nanocomposite films were processed via hot pressing at 140 °C, 170 °C, and 185 °C at a pressure of 2 tons for 15 min. According to a surface investigation using scanning electron microscopy (SEM), the spherulitic character of the PVDF nanocomposite films was preserved up to a pressing temperatures of 140 °C. The cross-sectional SEM images confirmed that higher pressing temperatures (170 °C) caused the structures to be compacted into monolithic films, and a pressing temperature of 185 °C caused the melting of the PVDF matrix and its recrystallization into thin films (21–29 μm). An average crystallinity value of 51.5% was calculated using differential scanning calorimetry (DSC), and this decreased as the pressing temperature increased. Fourier transform infrared (FTIR) measurements confirmed the presence of a dominant γ phases in the PVDF nanocomposite films, whose nanofillers consisted of vermiculite particles (ZnO_V and ZnO_V_CH) and mixed α + γ phases. The percentage of the electroactive γ phase (approximately 79%) was calculated via a FTIR analysis, and the ratio between the β phase and the α phase was determined from the Raman spectra. A hydrophilic surface with contact angles ranging from 61 to 84° was demonstrated for all the PVDF nanocomposite membranes. The superoleophilic surface was measured using poly(dimethylsiloxane) with contact angles ranging from 4 to 13°, and these angles reached lower values when in contact with sulfur particles.</jats:p>