| 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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Caussé, Nicolas
University of Toulouse
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (28/28 displayed)
- 2024Analysis of a film-forming amine response in impedance spectracitations
- 2024Adsorption kinetics and inhibition mechanisms of a film-forming amine on carbon steel surfacescitations
- 2024A comparative study of lithium salts for the corrosion inhibition of 2024 aluminium alloy
- 2023Ageing processes of coil-coated materials: Temperature-controlled electrochemical impedance analysiscitations
- 2023Ageing processes of coil-coated materials: Temperature-controlled electrochemical impedance analysiscitations
- 2023Film-forming amines adsorption and corrosion kinetics on carbon steel surface in neutral solution investigated by EIS and PM-IRRAS analysiscitations
- 2023Single-Step PEDOT deposition by oxidative chemical vapor deposition for opto-electronic applications
- 2023Single-Step PEDOT Deposition by oCVD for ITO-Free Deep Blue OLEDscitations
- 2023Single-Step PEDOT Deposition by oCVD for ITO-Free Deep Blue OLEDscitations
- 2021Liquid antimony pentachloride as oxidant for robust oxidative chemical vapor deposition of Poly(3,4-ethylenedioxythiophene) filmscitations
- 2021Partially acrylated linseed oil UV-cured coating containing a dihemiacetal ester for the corrosion protection of an aluminium alloycitations
- 2021Impedance analysis of the barrier effect of coil-coated materials: Water uptake and glass transition variationscitations
- 2021In situ study of the temperature activated kinetics of water sorption in an epoxy varnishcitations
- 2020An out of the box vision over oxidative chemical vapor deposition of PEDOT involving sublimed iron trichloridecitations
- 2020Correlation between the physical structure of a commercially formulated epoxy paint and its electrochemical impedance responsecitations
- 2020Film-Forming Amines for the Corrosion Protection of Carbon Steels in Nuclear Power Plant Secondary Circuit Conditions: An Impedance Studycitations
- 2019Synthesis of new high molecular weight phosphorylated chitosans for improving corrosion protectioncitations
- 2019Thermal activation of impedance measurements on an epoxy coating for the corrosion protection: 2. electrochemical impedance spectroscopy studycitations
- 2019Thermal activation of impedance measurements on an epoxy coating for the corrosion protection: 1. Dielectric spectroscopy response in the dry statecitations
- 2019New bio-based phosphorylated chitosan/alginate protective coatings on aluminum alloy obtained by the LbL techniquecitations
- 20198-hydroxyquinoline-modified clay incorporated in an epoxy coating for the corrosion protection of carbon steelcitations
- 2019Corrosion rate determination of rare-earth Mg alloys in a Na2SO4 solution by electrochemical measurements and inductive coupled plasma-optical emission spectroscopycitations
- 2018Impedance analysis of film-forming amines for the corrosion protection of a carbon steelcitations
- 2017Determination of water uptake in organic coatings deposited on 2024 aluminium alloy: Comparison between impedance measurements and gravimetrycitations
- 2017Adaptation of a dry metalorganic chemical vapor deposition (MOCVD) metallization process to a wet chemical pretreatment of polymerscitations
- 2016Morphology and dynamical mechanical properties of poly ether ketone ketone (PEKK) with meta phenyl linkscitations
- 2016Morphology and dynamical mechanical properties of poly ether ketone ketone (PEKK) with meta phenyl linkscitations
- 2013New bonded assembly configuration for dynamic mechanical analysis of adhesivescitations
Places of action
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article
In situ study of the temperature activated kinetics of water sorption in an epoxy varnish
Abstract
The dielectric permittivity of a polyepoxy varnish with a glass transition temperature (Tg) of 61 °C is monitored during immersion in a 0.5 M NaCl aqueous solution, by electrochemical impedance spectroscopy, at various temperatures in the range [21; 78] °C. The sorption curves are first analysed with a Fickian approach. An Arrhenius-type dependence of the apparent coefficient of diffusion is observed, with no visible influence of Tg. Below 46 °C, the sorption curves clearly do not obey Fick′s second law of diffusion. On another hand, the Kohlrausch-Williams-Watts function (KWW) satisfactorily fits all the isothermal sorption curves. The KWW time constant has the same temperature activation as the apparent coefficient of diffusion, and likewise is unaffected by Tg. The KWW stretching exponent displays a strong dependence on Tg, correlates with the Fickian behaviour observed in the rubbery state, and is thought to be governed by molecular heterogeneities in the polyepoxy network. A linear rule of mixture is used to estimate the water uptake in the polyepoxy varnish as a function of temperature. The originality of this work lies in the in situ analysis of water uptake kinetics (constant immersion), which is performed above (rubbery state) and below (glassy state) the Tg of the polyepoxy coating.