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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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Sotta, Paul
French National Centre for Scientific Research
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (18/18 displayed)
- 2023CHARACTERIZATION OF STICKY DEBRIS GENERATED DURING SMEAR WEARcitations
- 2023Double Networks: Hybrid Hydrogels with Clustered Silicacitations
- 2023Role of Polymer–Particle Adhesion in the Reinforcement of Hybrid Hydrogelscitations
- 2020Multiscale Structural Characterization of Biobased Diallyl–Eugenol Polymer Networkscitations
- 2020Multiscale Structural Characterization of Biobased Diallyl–Eugenol Polymer Networkscitations
- 2020Competitive Adsorption between a Polymer and Solvents onto Silicacitations
- 2019Thermoreversible Gelation of a Vinylidene Fluoride‐Based Copolymer in Methyl Ethyl Ketone: Dynamics and Structurecitations
- 2019Multiscale Structural Characterization of Biocompatible Poly(trimethylene carbonate) Photoreticulated Networkscitations
- 2017Tensile Deformation of Bulk Polyamide 6 in the Preyield Strain Range. Micro-Macro Strain Relationships via in Situ SAXS and WAXScitations
- 2016Dielectric Spectroscopy of a Stretched Polymer Glass: Heterogeneous Dynamics and Plasticitycitations
- 2013Reinforcement in Natural Rubber Elastomer Nanocomposites: Breakdown of Entropic Elasticitycitations
- 2013Mechanical Properties of Thin Confined Polymer Films Close to the Glass Transition in the Linear Regime of Deformation: Theory and Simulations
- 2013Studying Model samples to understand mechanical Properties of filled Elastomers
- 2012Mechanical properties of thin confined polymer films close to the glass transition in the linear regime of deformation: theory and simulations.citations
- 2012Mechanical properties of thin confined polymer films close to the glass transition in the linear regime of deformation: theory and simulations
- 2011Effect of Tear Rotation on Ultimate Strength in Reinforced Natural Rubbercitations
- 2003Gradient of glass transition temperature in filled elastomerscitations
- 2002Evidence for the Shift of the Glass Transition near the Particles in Silica-Filled Elastomerscitations
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article
Dielectric Spectroscopy of a Stretched Polymer Glass: Heterogeneous Dynamics and Plasticity
Abstract
We study the dielectric relaxation of polycarbonate (PC) at room temperature under imposed strain rate γ̇, above the yield stress, and up to 13% strain. We find that the dielectric response of stretched PC behaves as if it was heated up at a temperature just below its glass transition temperature, Tg ≈ 423 K for PC. Indeed, in the frequency range of our experiment (10–2 and 103 Hz), the dielectric response of the stretched PC at room temperature superimposes to the dielectric response of PC at a temperature Ta(γ̇) < Tg, which is a function of strain rate. Specifically we observe that at Ta the dominant relaxation time τα(Ta) of PC at rest is related to γ̇ in such a way that τα(Ta) ∼ 1/γ̇ at and beyond the yield point. In our experiment, 10–5 s–1 < γ̇ < 10–3 s–1, the temperature shifts Tg – Ta are of a few kelvin. The mechanical rejuvenation modifies the dielectric response at frequencies smaller than 10 Hz, whereas for higher frequencies the spectrum is only slightly modified.