| 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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Launois, Pascale
French National Centre for Scientific Research
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2022Strain-induced changes of the X-ray diffraction patterns of cross-linked poly(dimethylsiloxane): the texture hypothesis ; Changement sous contrainte des images de diffraction des rayons X du poly-dimethylsiloxane) : l'hypothèse texturalecitations
- 2022Strain-induced changes of the X-ray diffraction patterns of cross-linked poly(dimethylsiloxane): the texture hypothesiscitations
- 2020Influence of the Al/Ge Ratio on the Structure and Self-Organization of Anisometric Imogolite Nanotubescitations
- 2019Nanomaterials From Imogolite: Structure, Properties, and Functional Materialscitations
- 2016A liquid-crystalline hexagonal columnar phase in highly-dilute suspensions of imogolite nanotubescitations
- 2014Vertically aligned carbon nanotube-based composite: Elaboration and monitoring of the nanotubes alignmentcitations
- 2013Intracellular fate of carbon nanotubes inside murine macrophages: pH-dependent detachment of iron catalyst nanoparticles.citations
- 2009Insights into the mechanism of the gas-phase purification of HiPco SWNTs through a comprehensive multi-technique studycitations
- 2008Vanadium Oxide-PANI Nanocomposite-Based Macroscopic Fibers: 1D Alcohol Sensors Bearing Enhanced Toughnesscitations
- 2005NEXAFS and X-ray scattering study of structure changes after post-annealing treatments of aligned MWNTscitations
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article
Vanadium Oxide-PANI Nanocomposite-Based Macroscopic Fibers: 1D Alcohol Sensors Bearing Enhanced Toughness
Abstract
For the first time, using an extrusion process, macroscopic composite poly-vinyl alcohol(PVA)/polyaniline (PANI)-V2O5 fibers have been generated. Besides the extrusion process itself, this is certainly the first redox reaction addressed while performing an extrusion shaping process. The as-synthesized fibers have been characterized at different length scales, revealing at the mesoscale a 30° preferential orientation of the nanoribbons subunits toward the macroscopic fiber main axis. At the microscopic length scale, despite a semiamorphous nature, electron spin resonance (ESR) spectroscopy has been employed to reveal partial reduction of V5+ species to V4+ ones, where the paramagnetic species local environment has been found to be close to hydrated vanadium oxide xerogels. Concerning the organic counterpart, the aniline is oxidized into poly aniline when considering both the fibers characterization through ESR and Fourier transformed infrared (FTIR) spectroscopy and the well-known strongly oxidizing character of V5+ species toward aniline. These new PVA/PANI-V2O5 fibers are cycling when sensing alcoholic vapors while offering a good selectivity. The addressed sensitivity allows sensing 5 ppm of ethanol within 3-5 s at 42 °C. Beyond, the as-synthesized PVA/PANI-V2O5 macroscopic fibers possess a toughness of 12 J g-1, a value that has been increased by more than 120 times when compared with nanoporous inorganic fibers.