| 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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Ghorbani, Kamran
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2018Fracture and fatigue behaviour of epoxy nanocomposites containing 1-D and 2-D nanoscale carbon fillerscitations
- 2017Enhancing fatigue resistance and damage characterisation in adhesively-bonded composite joints by carbon nanofibrescitations
- 2017Using carbon nanofibre Sensors for in-situ detection and monitoring of disbonds in bonded composite jointscitations
- 2016A novel route for tethering graphene with iron oxide and its magnetic field alignment in polymer nanocompositescitations
- 2016Multifunctional properties of epoxy nanocomposites reinforced by aligned nanoscale carboncitations
- 2015Disbond monitoring of adhesive joints reinforced with carbon nanofibres
- 2015Aligning multilayer graphene flakes with an external electric field to improve multifunctional properties of epoxy nanocompositescitations
- 2015Epoxy nanocomposites with aligned carbon nanofillers by external electric fields
- 2015Improving the toughness and electrical conductivity of epoxy nanocomposites by using aligned carbon nanofibrescitations
Places of action
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article
A novel route for tethering graphene with iron oxide and its magnetic field alignment in polymer nanocomposites
Abstract
<p>We present a new route of tethering graphene nanoplatelets (GNPs) with Fe<sub>3</sub>O<sub>4</sub> nanoparticles to enable their alignment in an epoxy using a weak magnetic field. The GNPs are first stabilized in water using polyvinylpyrrolidone (PVP) and Fe<sub>3</sub>O<sub>4</sub> nanoparticles are then attached via co-precipitation. The resultant Fe<sub>3</sub>O<sub>4</sub>/PVP-GNPs nanohybrids are superparamagnetic and can be aligned in an epoxy resin, before gelation, by applying a weak magnetic field as low as 0.009 T. A theoretical model describing the alignment process is presented and used to quantify the effects of key parameters on the time needed for the alignment process. Compared to the unmodified epoxy, the resulting epoxy polymer nanocomposites containing randomly-oriented Fe<sub>3</sub>O<sub>4</sub>/PVP-GNPs nanohybrids exhibit significantly improved electrical conductivities by up to three orders of magnitude and fracture energies by up to 300%. The alignment of the Fe<sub>3</sub>O<sub>4</sub>/PVP-GNPs nanohybrids in the epoxy polymer nanocomposites transverse to the direction of crack propagation further increased the fracture energy by 50%, and the electrical conductivity by seven fold in the alignment direction, compared to the nanocomposites containing randomly-oriented nanohybrids.</p>