Layers of Inhibitor Anion – Doped Polypyrrole for Corrosion Protection of Mild Steel

Đức, Lê Minh; Trung, Vũ Quốc

doi:10.5772/54573

Materials Science - Advanced Topics 2013

DOI: 10.5772/54573

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Layers of Inhibitor Anion – Doped Polypyrrole for Corrosion Protection of Mild Steel

Lê Minh Đức¹,

Vũ Quốc Trung²

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2023

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Polypyrrole-based nanocomposites doped with both salicylate/molybdate and graphene oxide for enhanced corrosion resistance on low-carbon steel

Hung,

Thi,

Van Khoe

et al. 2023

Designed Monomers and Polymers

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In this work, polypyrrole-based nanocomposites doped with graphene oxide, molybdate, and salicylate (PPy/GO/Mo/Sal) were synthesized via in situ electrochemical polymerization to enhance the anti-corrosion protection performance of polymer coatings. The morphology and structures of the coatings were characterized by SEM, EDX, FTIR, Raman spectroscopy, and XRD. The protection abilities of coatings against corrosion were investigated in 0.1 M NaCl solution with EIS potentiodynamic polarization, salt spray test, and open-circuit potential (OCP) measurements. The results showed that with the presence of both molybdate/salicylate and GO in the PPy matrix, the nanocomposite coating exhibited an excellent protection ability against corrosion for low-carbon steel, better than that with only GO as filler. Compared to the nanocomposites doped with only salicylate or salicylate/GO, the one doped with both molybdate/salicylate and GO exhibited the longest protection plateau (ca. 100 h) on the OCP-time curves with some fluctuation points known as the self-healing action of molybdate dopant. It also resulted in a decrease in the corrosion current (Tafel plots), a higher impedance (Bode plot), and a better protection performance in salt spray tests. In this case, the anti-corrosion ability of the coatings was provided through a barrier and self-healing mechanism.

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Polypyrrole-based nanocomposites doped with both salicylate/molybdate and graphene oxide for enhanced corrosion resistance on low-carbon steel

Hung,

Thi,

Van Khoe

et al. 2023

Designed Monomers and Polymers

View full text Add to dashboard Cite

show abstract

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Layers of Inhibitor Anion – Doped Polypyrrole for Corrosion Protection of Mild Steel

Cited by 1 publication

References 36 publications

Polypyrrole-based nanocomposites doped with both salicylate/molybdate and graphene oxide for enhanced corrosion resistance on low-carbon steel

Polypyrrole-based nanocomposites doped with both salicylate/molybdate and graphene oxide for enhanced corrosion resistance on low-carbon steel

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