| Titre : |
Corrosion protection by organic coatings containing polyaniline salts prepared by oxidative polymerization |
| Type de document : |
texte imprimé |
| Auteurs : |
M. Kohl, Auteur ; A. Kalendova, Auteur ; E. Černošková, Auteur ; M. Bláha, Auteur ; J. Stejskal, Auteur ; M. Erben, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 1397-1410 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Anticorrosifs
Anticorrosion
Corrosion
Electrochimie
Essais accélérés (technologie)
Liants
Polyalkydes
Polyaniline
Polymérisation par oxydation
Revêtements -- Analyse:Peinture -- Analyse
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Revêtements organiques
Revêtements protecteurs
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The aim of this work was to describe polyaniline salts synthesized and to assess the mechanical and anticorrosion properties of alkyd resin-based coating materials pigmented with them, in dependence on the pigment volume concentration and type. Polyaniline salts were prepared by oxidative polymerization in the solutions of inorganic (hydrochloric, phosphoric, and sulfuric) and organic (p-toluenesulfonic and 5-sulfosalicylic) acids. Polyaniline salts were characterized by thermal analysis and spectroscopic methods. Electrical conductivity was also measured by the van der Pauw method, and the molecular weight of the polyaniline was determined by gel permeation chromatography. Furthermore, the particle size of the solid salts was measured, and the morphology was studied by scanning electron microscopy. Subsequently, the parameters required to formulate pigmented organic coatings, i.e., density and critical pigment volume concentration were determined. A soybean oil-based fast drying alkyd resin of medium oil length was used as the binder for the organic coating material. Organic coatings containing the polyaniline salts at pigment volume concentrations 0%, 1%, 5%, 10%, and 15% were formulated and subjected to a standard accelerated cyclic corrosion tests. The organic coatings (paint films) were also subjected to mechanical tests and to the electrochemical test by potentiodynamic polarization studies. |
| Note de contenu : |
- EXPERIMENTAL METHODS : Synthesis - Characterization - Formulation and preparation of the organic coatings - Mechanical properties of the paints - Corrosion studies
- RESULTS AND DISCUSSION : Thermogravimetric analysis - Differential scanning calorimetry (DSC) - X-ray diffraction analysis - Infrared spectroscopy - Molecular weight - Conductivity - Particle size - Particle morphology - pH and electrical conductivity of aqueous extracts of the polyaniline salts and paint films - Density, oil absorption, and critical pigment volume concentration (CPVC) - Mechanical properties of the coating systems - Accelerated cyclic corrosion tests - Mechanism of corrosion protection by polyaniline coatings |
| DOI : |
10.1007/s11998-017-9942-5 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9942-5.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29643 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 6 (11/2017) . - p. 1397-1410
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Corrosion protection by organic coatings containing polyaniline salts prepared by oxidative polymerization in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 6 (11/2017)
