EFFECT OF THE MONOMERS RATIO IN THE ELECTROSYNTHESIS OF POLY(ANILINE-<i>CO</i>-<i>O</i>-METHOXYANILINE) ON STEEL CORROSION PROTECTION

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dc.contributor.authorDel Valle, M. A.
dc.contributor.authorMieres, E.
dc.contributor.authorMotheo, A.
dc.contributor.authorRamirez, A. M. R.
dc.date.accessioned2025-01-23T19:46:20Z
dc.date.available2025-01-23T19:46:20Z
dc.date.issued2020
dc.description.abstractIn this work, the synthesis of poly(aniline-co-o-methoxyaniline) was carried out on AISI 304 steel, by voltammetric or potentiostatic method. Electropolymerization was achieved from different ratios of 0.4 mol.L-1 aniline/o-methoxyaniline monomers in 1.0 mol.L-1 H2SO4. Homo- and copolymers were characterized by cyclic voltammetry, infrared spectroscopy, and scanning electron microscopy. Furthermore, the electrodeposits were studied with a view to their use as corrosion protectors, for which their polarization curve was measured in NaCl 3% and, after 168 h, the surface of the steel was also evaluated by optical microscopy. It was observed that the reactivity that the o-methoxy group gives to the aniline ring reduces the protection against corrosion due to the excessive inclusion of N-phenyl-1,4-benzo quinonedi-imine oligomers and/or with an oxazine structure. On the other hand, the optical images confirm the surface damage of the steel, correlating with SEM images that show morphological changes associated with the progress of synthesis and the o-methoxy group. Nevertheless, under optimal conditions, poly(aniline-co-o-methoxyaniline) modifies the corrosion potential of AISI 304 steel, displacing it by 0.283 V. Furthermore, the presence of small pits and the absence of surface oxide was observed, indicating a significant delay in the oxidation of AISI-304 steel.
dc.fuente.origenWOS
dc.identifier.issn0717-9707
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/100292
dc.identifier.wosidWOS:000596297000012
dc.issue.numero4
dc.language.isoen
dc.pagina.final5003
dc.pagina.inicio4998
dc.revistaJournal of the chilean chemical society
dc.rightsacceso restringido
dc.subjectAISI-304 steel
dc.subjectconducting polymer
dc.subjectcorrosion
dc.subjectpoly(aniline)
dc.subjectpoly(aniline-co-o-methoxyaniline)
dc.subjectpoly(o-methoxyaniline)
dc.titleEFFECT OF THE MONOMERS RATIO IN THE ELECTROSYNTHESIS OF POLY(ANILINE-<i>CO</i>-<i>O</i>-METHOXYANILINE) ON STEEL CORROSION PROTECTION
dc.typeartículo
dc.volumen65
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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