A comparative study of epoxy and polyurethane based coatings containing polyaniline-DBSA pigments for corrosion protection on mild steel

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dc.contributor.authorDiniz, F. B.
dc.contributor.authorDe Andrade, G. F.
dc.contributor.authorMartins, C. R. [UNIFESP]
dc.contributor.authorDe Azevedo, W. M.
dc.contributor.institutionUniversidade Federal de Pernambuco (UFPE)
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.date.accessioned2016-01-24T14:31:43Z
dc.date.available2016-01-24T14:31:43Z
dc.date.issued2013-05-01
dc.description.abstractOrganic coatings based on epoxy and polyurethane matrices containing polyaniline doped with dodecyl benzene sulfonic acid (Pani-DBSA) were prepared and applied over steel plates (SAE 1020). the plates were submitted to salt spray chamber for up to 30 days in order to evaluate the corrosion protection of these coatings. the properties of the coated plates were analyzed as a function of time by electrochemical impedance spectroscopy, open circuit potential, optical microscopy, and Raman spectroscopy. in general, results indicate a decrease in the electrical resistance, increase in capacitance and decrease in open circuit potential. Epoxy based coatings have improved performance when Pani-DBSA is used as pigment, whereas for the polyurethane coatings, Pani-DBSA seems to play an adverse effect. Raman spectroscopy indicates a possible chlorination of the epoxy matrix after 30 days exposure to salt spray chamber. (C) 2013 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv Fed Pernambuco, Dept Quim Fundamental, CCEN, BR-50740560 Recife, PE, Brazil
dc.description.affiliationUniversidade Federal de São Paulo, Dept Ciencias Exatas & Terra, BR-05508900 São Paulo, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Dept Ciencias Exatas & Terra, BR-05508900 São Paulo, Brazil
dc.description.sourceWeb of Science
dc.format.extent912-916
dc.identifierhttp://dx.doi.org/10.1016/j.porgcoat.2013.02.010
dc.identifier.citationProgress in Organic Coatings. Lausanne: Elsevier Science Sa, v. 76, n. 5, p. 912-916, 2013.
dc.identifier.doi10.1016/j.porgcoat.2013.02.010
dc.identifier.issn0300-9440
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/36299
dc.identifier.wosWOS:000318136200016
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofProgress in Organic Coatings
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.rights.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.subjectPolyanilineen
dc.subjectEpoxyen
dc.subjectPolyurethaneen
dc.subjectRaman spectroscopyen
dc.subjectSteelen
dc.subjectElectrochemical impedance spectroscopyen
dc.titleA comparative study of epoxy and polyurethane based coatings containing polyaniline-DBSA pigments for corrosion protection on mild steelen
dc.typeinfo:eu-repo/semantics/article
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