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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
Thermoreversible Gelation of a Vinylidene Fluoride‐Based Copolymer in Methyl Ethyl Ketone: Dynamics and Structure
Abstract
Thermoreversible poly(vinylidene fluoride-co-hexafluoropropylene) (P(VDF-co-HFP)) gels are formed in an aliphatic ketone À methyl ethyl ketone (MEK) À at high concentrations (above 11 wt%). This gelation phenomenon is first investigated in terms of gelation kinetics which is found to depend strongly on both copolymer concentration and temperature. Melting temperatures T m of P(VDF-co-HFP)-based gels prepared at different concentrations, in MEK are measured by DSC. Combination of 19 F Nuclear Magnetic Resonance (NMR), Small-Angle X-ray Scattering (SAXS), and Wide-Angle X-ray Scattering (WAXS) on undried/nonlyophilized gels is used to probe both the gelation mechanisms and the structure of these systems. 19 F NMR experiments allow studying selectively the fluorinated copolymer. The occurrence of a polymer network-like structure with rigid zones acting as cross-links has been highlighted. Such a behavior is only observed in the gel state: no polymer network or rigid zones exist when the polymer-solvent system is in the liquid state. Moreover, the fraction of rigid zones as well as the fraction of elastically active chain portions increases with the copolymer concentration. The nature, of the rigid zones present within the gels are investigated by X-ray diffraction. Rigid regions are found to display a crystalline order.