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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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Pruvost, Sébastien
Institut National des Sciences Appliquées de Lyon
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2024Ambient moisture influence on the secondary relaxations of epoxy-amine networks with different crosslink densitiescitations
- 2023Pyroresistive Properties of Composites Based on HDPE and Carbon Fillerscitations
- 2023Dispersion of Cellulose Nanofibers in Methacrylate-Based Nanocompositescitations
- 2022Effect of Temperature and Humidity on the Water and Dioxygen Transport Properties of Polybutylene Succinate/Graphene Nanoplatelets Nanocomposite Filmscitations
- 2021Dielectric behaviour of an epoxy network cured with a phosphonium-based ionic liquidcitations
- 2021Improvement of Barrier Properties of Biodegradable Polybutylene Succinate/Graphene Nanoplatelets Nanocomposites Prepared by Melt Processcitations
- 2019The Role of Fluorinated IL as an Interfacial Agent in P(VDF-CTFE)/Graphene Composite Filmscitations
- 2019The Role of Fluorinated IL as an Interfacial Agent in P(VDF-CTFE)/Graphene Composite Filmscitations
- 2017Electrical, thermal and mechanical properties of poly-etherimide epoxy-diamine blendcitations
- 2016Probing nanomechanical properties with AFM to understand the structure and behavior of polymer blends compatibilized with ionic liquidscitations
- 2016AFM PeakForce QNM mode: Evidencing nanometre-scale mechanical properties of chitin-silica hybrid nanocompositescitations
- 2016Probing nanomechanical properties with AFM to understand the structure and behavior of polymer blends compatibilized with ionic liquids citations
- 2014Ionic Liquids as Reactive Additives for the Preparation and Modification of Epoxy Networkscitations
- 2014Ionic Liquids as Reactive Additives for the Preparation and Modification of Epoxy Networkscitations
Places of action
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article
Dielectric behaviour of an epoxy network cured with a phosphonium-based ionic liquid
Abstract
Phosphonium based ionic liquids (ILs) have been previously shown as a new emerging class of initiator of epoxy prepolymers. The present study aims at investigating the influence of ILs on the dielectric behaviour of epoxy-IL systems by dielectric spectroscopy. Here, the content of IL incorporated in the epoxy prepolymer has a significant impact on the final properties of the polymer networks displaying a high glass transition temperature (Tg > 160 °C). The excess of IL (>10 phr) acts as a plasticizer agent decreasing the Tg and leading to the formation of heterogeneities. Moreover, the study of α and β conventional relaxation modes by dielectric spectroscopy highlighted an increase of chain mobility due to IL excess. A ω relaxation mode has been noticed with the addition of high content of IL, probably relating to heterogeneities of the network. Unlike the most of polymer systems, the study of the DC conductivity by the application of an Arrhenius law demonstrated a thermal activation mechanism, independent from the free volume and the glass transition phenomenon. A discussion on the identification of charge carriers has been finally proposed.