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| Naji, M. |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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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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| Kočí, Jan | Prague |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ali, M. A. |
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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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Mcnally, T.
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Topics
Publications (7/7 displayed)
- 2018Hot-melt adhesives based on co-polyamide and multiwalled carbon nanotubescitations
- 2015Investigation of Mechanical Properties of Aluminium Alloys with Carbon Nanotubes
- 2011Influence of screw speed on electrical and rheological percolation of melt-mixed high-impact polystyrene/MWCNT nanocompositescitations
- 2011Introduction to polymer-carbon nanotube compositescitations
- 2011Polymer-Carbon Nanotube Composites: Preparation, Properties and Applications
- 2010Electrical and rheological percolation of PMMA/MWCNT nanocomposites as a function of CNT geometry and functionalitycitations
- 2005Polyethylene multiwalled carbon nanotube compositescitations
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article
Hot-melt adhesives based on co-polyamide and multiwalled carbon nanotubes
Abstract
Composites of two hot melt adhesives based on co-polyamides, one high viscosity (coPA_A), the other low viscosity (coPA_B), and multiwalled carbon nanotubes (MWCNTs) were prepared using twin-screw extrusion via dilution of masterbatches. Examination of these composites across the length scales confirmed that the MWCNTs were uniformly dispersed and distributed in the polymer matrices, although some micron size agglomerations were also observed. A rheological percolation was determined from oscillatory rheology measurements at a mass fraction of MWCNTs below 0.01 for coPA_B and, between 0.01 and 0.02 for coPA_A. Significant increases in complex viscosity and storage modulus confirmed the “pseudo-solid” like behavior of the composite materials. Electrical percolation, determined from dielectric spectroscopy was, found to be at 0.03 and 0.01 MWCNT mass fraction for coPA_A and coPA_B based composites, respectively. Addition of MWCNTs resulted in heterogeneous nucleation and altered the crystallization kinetics of both copolymers. Indirect evidence from contact angle measurements and surface energy calculations confirmed that MWCNT addition enhanced the adhesive properties of coPA_B to a level similar to coPA_A.