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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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Lahcini, Mohammed
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2024Molecular dynamics of poly(ε‐caprolactone)/beidellite organoclay bionanocomposites obtained by in‐situ polymerization highlighted by dielectric relaxation spectroscopy
- 2023Expanding Chitosan Reticular Chemistry Using Multifunctional and Thermally Stable Phosphorus-Containing Dendrimerscitations
- 2023Bismuth Nanoparticles Supported on Biobased Chitosan as Sustainable Catalysts for the Selective Hydrogenation of Nitroarenescitations
- 2023Exploiting poly(ε-caprolactone) grafted from hydrohydroxymethylated sunflower oil as biodegradable coating material of water-soluble fertilizerscitations
- 2022The paradigm of the filler's dielectric permittivity and aspect ratio in high-k polymer nanocomposites for energy storage applicationscitations
- 2022Novel lead-free BCZT-based ceramic with thermally-stable recovered energy density and increased energy storage efficiencycitations
- 2022A flexible self-poled piezocomposite nanogenerator based on H 2 (Zr 0.1 Ti 0.9 ) 3 O 7 nanowires and polylactic acid biopolymercitations
- 2022The paradigm of the filler's dielectric permittivity and aspect ratio in high- k polymer nanocomposites for energy storage applicationscitations
- 2021Lead-free nanocomposite piezoelectric nanogenerator film for biomechanical energy harvestingcitations
- 2021Formulation and characterization of hydroxyapatite-based composite with enhanced compressive strength and controlled antibiotic releasecitations
- 2020Enhanced dielectric and electrocaloric properties in lead-free rod-like BCZT ceramicscitations
- 2020Phosphorus pentoxide as a cost-effective, metal-free catalyst for ring opening polymerization of ε-caprolactonecitations
- 2020Thermally-stable high energy storage performances and large electrocaloric effect over a broad temperature span in lead-free BCZT ceramiccitations
- 2017Dynamic Resolution of Ion Transfer in Electrochemically Reduced Graphene Oxides Revealed by Electrogravimetric Impedancecitations
- 2013Radical Copolymerization of Acrylonitrile with 2,2,2-Trifluoroethyl Acrylate for Dielectric Materials: Structure and Characterizationcitations
- 2012Dielectric properties of copolymers based on cyano monomers and methyl α-acetoxyacrylatecitations
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article
Molecular dynamics of poly(ε‐caprolactone)/beidellite organoclay bionanocomposites obtained by in‐situ polymerization highlighted by dielectric relaxation spectroscopy
Abstract
<jats:title>Abstract</jats:title><jats:sec><jats:label/><jats:p>Nanocomposites of poly(ε‐caprolactone) (PCL) reinforced by an organomodified beidellite (BDT) with 3% of cetyltrimethylammonium bromide (CTAB) (labeled PCL/3CTA‐BDT) were prepared by varying the content of filler (1, 2, 3, and 5 wt%). Their molecular dynamics were investigated by broadband dielectric spectroscopy at temperatures ranging from 0 to 40°C and a frequency window from 10<jats:sup>−1</jats:sup> to 10<jats:sup>6</jats:sup> Hz. Three relaxation processes were detected for unfilled PCL: electrode polarization (EP), the Maxwell–Wagner–Sillars (MWS) polarization, and the α‐relaxation. The incorporation of the filler induced the emergence of a fourth process at high frequency of dipolar origin labeled as interfacial polarization (IP). Fitting the data with the Havriliak–Negami model as well as a study of the relaxation time variation with temperature demonstrated the noncooperative nature of the IP process. Activation energy and dielectric strength values demonstrated that the PCL/3CTA‐BDT with 3 wt% of filler showed a higher quality of dispersion and better interfacial features compared to those with other filler contents (2 and 5 wt%). This work highlights the challenges of dielectric green nanocomposites used for capacitors (storage energy) and cable/wire insulation.</jats:p></jats:sec><jats:sec><jats:title>Highlights</jats:title><jats:p><jats:list list-type="bullet"> <jats:list-item><jats:p>The various samples were analyzed using broadband dielectric spectroscopy.</jats:p></jats:list-item> <jats:list-item><jats:p>Relaxation processes in pure matrix: EP, MWS, and α‐relaxation.</jats:p></jats:list-item> <jats:list-item><jats:p>Incorporation of the filler induced the emergence of interfacial polarization (IP).</jats:p></jats:list-item> <jats:list-item><jats:p>Noncooperative behavior of the IP process.</jats:p></jats:list-item> <jats:list-item><jats:p>3 wt% loading showed a higher quality of dispersion and interfacial features.</jats:p></jats:list-item> </jats:list></jats:p></jats:sec>