| 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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Wagner, Hanoch Daniel
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Topics
Publications (10/10 displayed)
- 2024From Basic Principles of Protein-Polysaccharide Association to the Rational Design of Thermally Sensitive Materialscitations
- 2022Fragmentation of beaded fibres in a composite
- 2016Graphene oxide-Laponite hybrid from highly stable aqueous dispersioncitations
- 2013Osteonal lamellae elementary unitscitations
- 2012Nanoindentation of osteonal bone lamellaecitations
- 2010A novel experimental method for the local mechanical testing of human coronal dentincitations
- 2009Compressive response of dentin micro-pillarscitations
- 2007Microscopic investigation of shear in multiwalled nanotube deformationcitations
- 2001Nanoscale shear and indentation measurements in transcrystalline α-isotactic polypropylenecitations
- 2001Mechanics and dynamics of transcrystalline alpha-isotactic polypropylene at the nanoscale
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article
Graphene oxide-Laponite hybrid from highly stable aqueous dispersion
Abstract
<p>A simple method for preparation of hybrid of graphene oxide (GO) and Laponite (Lap), obtained by solvent evaporation from their highly stable aqueous dispersions is reported. The dispersion up to ~ 1 mg/ml of GO in 1% Lap dispersion, i.e., 10:1 of Lap:GO was found to be stable without flocculation for several months; lower mass ratios of Lap to GO than this showed marginal flocculation with time. The electrostatic interaction between cations present in the interlayers of Lap and the functional groups of GO is envisaged to be the cause for the stable dispersion, which was confirmed by the presence of cations; viz., Na<sup>+</sup> and small amounts of K<sup>+</sup> and Mg<sup>2 +</sup> in the aqueous filtrate of the hybrid. Their interaction was further confirmed by higher absorption of GO in aqueous Lap dispersion than that in water using UV–vis spectroscopy. The resulting hybrid material was found to be partially reduced and self-assembled to form layered structure in its dry state. The hybrids further showed improved electrical conductivity (~ 0.01 S/cm) upon chemical reduction. The present study demonstrates a facile method for preparation of a new hybrid material and greener pathway for GO reduction; though partially. This hybrid has potential as multifunctional filler for clay polymer nanocomposites.</p>