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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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Methapettyparambu Purushothama, Jayakrishnan
Heriot-Watt University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (4/4 displayed)
- 2023Planar CBRAM devices using non-cleanroom techniques as RF switchescitations
- 2018On the absorption dominated EMI shielding effects in free standing and flexible films of poly (vinylidene fluoride)/graphene nanocompositecitations
- 2016Mechanical, thermal and dielectric properties of hybrid composites of epoxy and reduced graphene oxide/iron oxidecitations
- 2016A Metamaterial backed dipole antenna for high gain directional communications
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article
Mechanical, thermal and dielectric properties of hybrid composites of epoxy and reduced graphene oxide/iron oxide
Abstract
A hybrid filler (RGO–Fe<sub>2</sub>O<sub>3</sub>) composed of inorganic nanoparticles of iron oxide (Fe<sub>2</sub>O<sub>3</sub>) on reduced graphene oxide nanoplatelets (RGO) was successfully synthesized using a microwave assisted chemical reaction. Incorporating RGO–Fe<sub>2</sub>O<sub>3</sub> in epoxy through in situ polymerization afforded RGO–Fe<sub>2</sub>O<sub>3</sub>/epoxy composites. Thermogravimetric analysis demonstrated the thermal stability of RGO–Fe<sub>2</sub>O<sub>3</sub>/epoxy composites. Improved property profiles of RGO–Fe<sub>2</sub>O<sub>3</sub>/epoxy were established through electrical conductivity measurements and dielectric properties in the range 40 Hz to 30 MHz and at microwave frequencies in the S band (2–4 GHz) region. Mechanical property measurements were also performed. Dielectric constant, electrical conductivity and absorption coefficient of RGO–Fe<sub>2</sub>O<sub>3</sub>/epoxy composites were found to be much higher than that of the neat epoxy matrix. Addition of 0.25 phr RGO–Fe<sub>2</sub>O<sub>3</sub> increased the tensile strength, flexural strength and impact strength by 56%, 81% & 112% respectively. Fracture toughness determined using single-edge notch three-point-bending specimens also showed an impressive enhancement. Microstructure studies like scanning electron microscopy and transmission electron microscopy demonstrated good interfacial adhesion, the underlying reason for overall improvement in mechanical properties.