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Synthesis and characterization of polypyrrole/TiO2 composites on mild steel

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Abstract

The anodic codeposition of polypyrrole and TiO2 on AISI 1010 steel substrates in oxalic acid medium was studied from the standpoint of their use as protective coatings against corrosion. The influence of surface treatment, pH, stirring and current density (j) on the current efficiency (γ) and pigment concentration incorporated in the polymer (C c) were investigated. The highest C c values (7.5%) were found at j = 5 mA cm−2, pH 4 and stirred baths. The composites were characterized by adherence and surface roughness tests, XPS, EDX, SEM, FTIR and cyclic voltammetry.

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Authors and Affiliations

  1. LAPOL–PPGEM, Universidade Federal do Rio Grande do Sul, Av. Osvaldo Aranha, 99 sala 702, 90035-190, Porto Alegre, Brazil

    C.A. Ferreira & S.C. Domenech

  2. ITODYS, Université Paris 7 Denis Diderot, 1, rue Guy de la Brosse, 75005, Paris, France

    P.C. Lacaze

Authors
  1. C.A. Ferreira
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  2. S.C. Domenech
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  3. P.C. Lacaze
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Ferreira, C., Domenech, S. & Lacaze, P. Synthesis and characterization of polypyrrole/TiO2 composites on mild steel. Journal of Applied Electrochemistry 31, 49–56 (2001). https://doi.org/10.1023/A:1004149421649

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  • DOI: https://doi.org/10.1023/A:1004149421649

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