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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
New bio-based phosphorylated chitosan/alginate protective coatings on aluminum alloy obtained by the LbL technique
Abstract
International audience ; Bio-based coatings were obtained by the layer-by-layer (LbL) technique from a native chitosan (Mw ≈ 30,000 g mol−1) or from two synthesized phosphorylated chitosan of different molecular weights (Mw ≈ 30,000 g mol−1 and Mw ≈ 250,000 g mol−1) combined with alginate and used for corrosion protection of an aluminum alloy (AA) 3003. First, the LbL growth was monitored by Fourier transform infrared spectroscopy on silicon wafers. Cross-sections of Si wafers were examined by scanning electron microscopy allowing the films thickness to be measured. With the native chitosan and in the presence of 10 bilayers, the LbL thickness was about 200 nm, whereas it was about 300 nm with the phosphorylated chitosan of low molecular weight and about 500 nm with the phosphorylated chitosan of high molecular weight. Then, the bio-based coatings were deposited on the AA3003 by the LbL technique and their protective properties were evaluated by electrochemical impedance spectroscopy (EIS) during immersion in a 0.1 M Na2SO4 solution. It was shown that the three LbL coatings improved the corrosion resistance of the AA3003. The resistance values, extracted at low frequency on the impedance diagrams were attributed to the resistance of the aluminum oxide layer (Rox). The Rox values were at least two orders of magnitude higher for the coated samples (108 Ω cm2) compared to the uncoated one (5 105 Ω cm2). There was no significant difference between the different LbL coatings, which mainly acted by decreasing the active surface area and have a limited barrier effect.