Phosphonic acid‐containing polysulfones as anticorrosive layers |
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Authors: | Edouard Chauveau Catherine Marestin Régis Mercier Alexis Brunaux Vincent Martin Ricardo P Nogueira Aurélien Percheron Virginie Roche Hugues Waton |
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Affiliation: | 1. Université de Lyon, Univ Lyon 1, CNRS, Ingénierie des Matériaux Polymères (IMP‐UMR 5223), Villeurbanne, France;2. Université Grenoble Alpes, Grenoble, France;3. Centre national de la recherche scientifique (CNRS), LEPMI, Grenoble, France;4. Institut des Sciences Analytiques UMR 5280, Villeurbanne, France |
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Abstract: | As a part of research work to elaborate polymeric materials for metal corrosion protection, we have developed a new family of phosphonic acid‐containing polymers. The synthesis and the characterization of polysulfones bearing alkyl phosphonate ester side groups are first described. These polymers are synthesized by direct polycondensation of a phosphonate ester‐containing bisphenol by aromatic nucleophilic substitution. The physicochemical properties of the resulting polymers are described. Acidic hydrolysis of phosphonate esters results in the formation of phosphonic acid groups. A series of phosphonic acid‐containing polysulfones is therefore obtained and characterized. A preliminary evaluation of the anticorrosive properties of these polymers is described. In 0.25M Na2SO4 solution, the corrosion rate of a polymer‐coated mild steel sample is much lower than of the free metal substrate. These results suggest that phosphonic acid‐containing polysulfones might be interesting as anticorrosive coatings. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 41890. |
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Keywords: | coatings functionalization of polymers polycondensation |
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