| 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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Zille, A.
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Topics
Publications (9/9 displayed)
- 2024The Influence of Hydroxyapatite Crystals on the Viscoelastic Behavior of Poly(vinyl alcohol) Braid Systemscitations
- 2023Halochromic Silk Fabric as a Reversible pH-Sensor Based on a Novel 2-Aminoimidazole Azo Dyecitations
- 2023Synergistic Antimicrobial Activity of Silver Nanoparticles with an Emergent Class of Azoimidazolescitations
- 2022Active Neutralizing Mats for Corrosive Chemical Storage
- 2019Comfort and Infection Control of Chitosan-impregnated Cotton Gauze as Wound Dressingcitations
- 2018Characterization of functional single jersey knitted fabrics using non-conventional yarns for sportswearcitations
- 2017Coated chitosan onto gauze to efficient conditions for maintenance of the wound microenvironmentcitations
- 2017Dielectric relaxation of near-percolated carbon nanofiber polypropylene compositescitations
- 2014Properties and controlled release of chitosan microencapsulated limonene oilcitations
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article
Dielectric relaxation of near-percolated carbon nanofiber polypropylene composites
Abstract
In this work, the morphological, structural and dielectric analysis of near-percolated polypropylene (PP) composites containing carbon nanofibers (CNF) processing by melt-mixing are investigated. Whereas the morphological analysis shows that CNF exhibit some tendency to agglomerate within the PP matrix, the structural analysis showed first a general decrease in the intensity of the IR bands as a consequence of the interaction between carbon nanofibers and PP matrix and second an increase of the crystallinity degree of the PP/CNF composites when compared to the pure PP. The dielectric analysis demonstrates enhanced dielectric constants (from 2.97 for neat polymer to 9.7 for 1.9 vol% loaded composites at 200 Hz) and low dielectric losses. Furthermore, the dielectric relaxation for composites with concentrations in the vicinity of percolation is evidenced and well described by the generalized polydispersive Cole-Cole model from which the values of static dielectric constant (epsilon(s)), high frequency dielectric constant ((8 epsilon)), distribution of relaxation time (alpha) and mean relaxation time (tau(o)), are determined, suggesting that this latter analysis constitutes a strong tool for understanding the relationships between microstructure and dielectric properties in this type of polymer composites.