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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
Correlation between the physical structure of a commercially formulated epoxy paint and its electrochemical impedance response
Abstract
International audience ; In the present work, a commercial high solids epoxy-based paint used for the corrosion protection of steel was characterized by electrochemical impedance spectroscopy (EIS). The aim was to analyze the influence of water absorption on the physical structure of the paint, through the impedance data analysis. First, the water uptake was followed by gravimetric measurements on free-standing films as a function of the exposure time to a 0.5 M NaCl solution. Gravimetric measurements indicated a mass loss, linked to a release of a plasticizer from the formulation. This compound was dosed in the NaCl solution. The water volume fraction was also determined from the high-frequency part of the impedance diagrams, employing a linear rule of mixtures. The water fraction values obtained from the two methods were in acceptable agreement. The glass transition temperature (Tg) was determined by differential scanning calorimetry for the dry coating as well as for the coating after different immersion times in the NaCl solution. The use of the dielectric permittivity formalism allowed the mean relaxation times to be obtained from the impedance data analysis. The real part of the electrical conductivity was also considered. The variation of these parameters values as a function of the exposure time to the NaCl solution, was correlated with the Tg variation. They accounted for plasticization at the beginning of immersion (water uptake) and antiplasticization for longer exposure times (plasticizer release). For the studied system, it was possible to extract parameters representative of the molecular mobility from the impedance spectra analysis and to link them to the modification of the coating’s physical structure.