Synthesis of polyaniline nanofiber and anticorrosion property of polyaniline–epoxy composite coating for Q235 steel / Cheng Yue Ge in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 1 (01/2012)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 9, N° 1 (01/2012) . - p. 59–69 Titre : Synthesis of polyaniline nanofiber and anticorrosion property of polyaniline–epoxy composite coating for Q235 steel Type de document : texte imprimé Auteurs : Cheng Yue Ge, Auteur ; Xiao Gang Yang, Auteur ; Bao Rong Hou, Auteur Année de publication : 2012 Article en page(s) : p. 59–69 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion Composites Nanofibres Oxydation Polyaniline Revêtements:Peinture Index. décimale : 667.9 Revêtements et enduits Résumé : Polyaniline (PANI) nanofibers were prepared by direct mixed oxidation in four kinds of inorganic acids. The characterization of scanning electron microscopy (SEM) showed that high quality PANI fibers with uniform diameter and several microns length can be obtained by direct mixed oxidation, especially in a sulfuric acid system. Structural characteristics of PANI products through IR and UV spectra indicated the consistent peak distribution with the classic spectrum of the doped PANI. In addition, composite coatings of PANI–epoxy resin were prepared by mechanical grinding. The effect of PANI’s content on anticorrosion property of the composite coatings for Q235 steel was studied by the electrochemical impedance spectroscopy (EIS). Results showed that the best shielding protective effect was obtained when the amount of PANI was around 0.5% (wt%). More importantly, the effects of four different inorganic acids on anticorrosion property of the composite coatings were studied by the EIS and Tafel polarization curve. Experiments showed that the different composite coatings of PANI doped by different inorganic acids provided different protective abilities for the Q235 steel. It can be concluded that both the morphology and counter-anion would impact the anticorrosion effect of the doped PANI. Note de contenu : - EXPERIMENTAL : Materials - Preparation of PANI–epoxy resin composite coating - Characteristics - RESULTS AND DISCUSSION : Structure characteristic of PANI - The effects of different inorganic acids on product’s morphology - Effects of the dosage of PANI on film and anticorrosion property of epoxy resin - Anticorrosion properties of PANIs doped by different acids for Q235 steel DOI : 10.1007/s11998-010-9316-8 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-010-9316-8.pdf?pdf=button Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14355 [article]

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