| 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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Sun, Dan
Queen's University Belfast
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2022Investigating hole making performance of Al 2024-T3/Ti-6Al-4V alloy stacks: A comparative study of conventional drilling, peck drilling and helical millingcitations
- 2021Characterizing Biaxiallly Stretched Polypropylene / Graphene Nanoplatelet Compositescitations
- 2021Characterizing Biaxiallly Stretched Polypropylene / Graphene Nanoplatelet Compositescitations
- 2020The analysis of dissolved inorganic carbon in liquid using a microfluidic conductivity sensor with membrane separation of CO2citations
- 2017CHARACTERIZING BIAXIALLY STRETCHED POLYPROPYLENE/GRAPHENE NANOPLATELET COMPOSITES
- 2016Optimization and Prediction of Mechanical and Thermal Properties of Graphene/LLDPE Nanocomposites by Using Artificial Neural Networkscitations
- 2016Melt processing and properties of linear low density polyethylene-graphene nanoplatelet compositescitations
- 2016Melt processing and properties of linear low density polyethylene-graphene nanoplatelet compositescitations
- 2015Melt Processing and Properties of Polyamide 6/Graphene Nanoplatelet Compositescitations
- 2015Characterisation of melt processed nanocomposites of Polyamide 6 subjected to uniaxial-drawing
- 2015Characterisation of melt processed nanocomposites of Polyamide 6 subjected to uniaxial-drawing
- 2009A '3-body' abrasion wear study of bioceramics for total hip joint replacementscitations
- 2009Abrasive size and concentration effects on the tribo-corrosion of cast CoCrMo alloy in simulated body fluidscitations
- 2009Micro-abrasion mechanisms of cast CoCrMo in simulated body fluidscitations
Places of action
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document
Characterisation of melt processed nanocomposites of Polyamide 6 subjected to uniaxial-drawing
Abstract
In this paper, the processing and characterization of Polyamide 6 (PA6) nanocomposites containing graphite nanoplatelets (GNPs) is reported.PA6 nanocomposites were prepared by melt-mixing using an industrial, co-rotating, intermeshing, twin-screw extruder. A bespoke screw configuration was used that was designed in-house to enhance nanoparticle dispersion into a polymer matrix. The effects of nano-filler type (xGnPTM M-5 and xGnPTM C-500), nano-filler content, and extruder screw speed on the bulk properties of the PA6 nanocomposites were investigated. The crystalline structures of PA6 nanocomposites are related to thermal treatment, stress history and the presence of moisture and nanofillers. DSC, Raman and XRD studies show an increase in crystallinity with increasing GNP content and a phase transformation between α-form to γ-form crystals as a result of the heterophase nucleation effect. The effect of uniaxial stretching on PA6 nanocomposites was investigated by drawing specimens heated at temperatures below the melting temperature. DSC and Raman studies on the drawn samples show an increase in yield stress as the GNP content increases due to the strain induced crystallization and γ—β transition during stretching. The rheological response of the nanocomposites resemble that of a ‘pseudo-solid’, rather than a molten liquid, and analysis of the rheological data indicates that a percolation threshold was reached at GNP contents of between 10–15wt%. An increase in tensile modulus of as much as 412% was observed for PA6/C-500 xGnPTM composites, at a filler content of 20wt%. The enhancement of Young’s modulus and yield stress can be attributed to the reinforcing effect of GNPs and their uniform dispersion in the PA6 matrix. The electrical conductivity of the composite also increased with increasing GNP content, with an addition of 15wt% GNP resulting in a 6 order-of-magnitude increase in conductivity. The effects of uniaxial-drawing and the inclusion of multiple nano-filler varieties on the electrical and mechanical properties are currently under investigation.