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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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Vallés, Cristina
University of Manchester
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024A data-driven model on the thermal transfer mechanism of composite phase change materialscitations
- 2024A data-driven model on the thermal transfer mechanism of composite phase change materialscitations
- 2023Tribology of Copper Metal Matrix Composites Reinforced with Fluorinated Graphene Oxide Nanosheets: Implications for Solid Lubricants in Mechanical Switchescitations
- 2020PMMA-grafted graphene nanoplatelets to reinforce the mechanical and thermal properties of PMMA compositescitations
- 2019Graphene/Polyelectrolyte Layer-by-Layer Coatings for Electromagnetic Interference Shieldingcitations
- 2018Insights into crystallization and melting of high density polyethylene/graphene nanocomposites studied by fast scanning calorimetrycitations
- 2016Effect of the C/O ratio in graphene oxide materials on the reinforcement of epoxy-based nanocompositescitations
- 2014Few layer graphene-polypropylene nanocomposites: the role of flake diametercitations
- 2014The rheological behaviour of concentrated dispersions of graphene oxidecitations
- 2013Graphene oxide and base-washed graphene oxide as reinforcements in PMMA nanocompositescitations
- 2012Reduced graphene oxide films as solid transducers in potentiometric all-solid-state ion-selective electrodescitations
- 2011Simultaneous reduction of graphene oxide and polyaniline: Doping-assisted formation of a solid-state charge-transfer complexcitations
- 2011Graphene: 2D-building block for functional nanocomposites
- 2009Effects of partial and total methane flows on the yield and structural characteristics of MWCNTs produced by CVDcitations
- 2009Processing route to disentangle multi-walled carbon nanotube towards ceramic compositecitations
- 2008Effects of partial and total methane flows on the yield and structural characteristics of MWCNTs produced by CVDcitations
- 2007CVD production of double-wall and triple-wall carbon nanotubescitations
- 2007CVD production of double-wall and triple-wall carbon nanotubescitations
- 2006Synthesis and properties of optically active polyaniline carbon nanotube compositescitations
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article
Graphene oxide and base-washed graphene oxide as reinforcements in PMMA nanocomposites
Abstract
Graphene oxide (GO) prepared using the Hummers' method is known to be composed of functionalized graphene sheets decorated by strongly-bound oxidative debris that can be removed by a simple base wash. The use of as-made GO and base-washed GO as reinforcing fillers in poly(methyl methacrylate) (PMMA) nanocomposites has been compared through dynamic mechanical thermal analysis and tensile testing. Nanocomposites with loadings from 0.5 to 10wt.% were produced by melt mixing using a twin screw extruder. Large shifts in the values of Tg for the nanocomposites with respect to PMMA suggest the presence of interactions between the GO and polymer. Thermogravimetric analysis also revealed a significant increase in the decomposition temperatures upon the addition of the GO. Optimal loadings of 1wt.% were found for both fillers, up to which substantial mechanical reinforcement was observed. Comparison with previous nanotube systems, suggests that there was a good dispersion of both fillers below 1wt.%, with aggregation and a deterioration of the mechanical properties occurring at higher loadings. Stress-induced shifts of the Raman D band in the GO revealed the existence of stress-transfer from the PMMA matrix to the fillers during deformation. Overall the as-made GO gave nanocomposites with better properties than those reinforced with based-washed material. Hence, it appears that the presence of the oxidative debris in GO, which acts as a compatibilising surfactant, is beneficial in producing nanocomposites with both a good dispersion and a strong interface between GO and a polymer matrix. © 2013 Elsevier Ltd.