Corrosion behavior of plasma electrolysis layer cross-linked with a conductive polymer coating

Kamil, M.P.; Suhartono, Tri; Ko, Young Gun

doi:10.1016/j.jmrt.2021.10.090

Cited by 18 publications

(14 citation statements)

References 40 publications

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“…In addition, the CPE c and CPE dl values of the three-layer core-shell coating are much smaller than that of the conventional core-shell coating at equal times of immersion. In summary, the above simulation results prove that both the crosslinking network created between the core and shell in the three-layer core-shell coating and the incorporation of a set interlayer are beneficial for hindering the permeation of O 2 , water, and corrosive ions to the coating/metal interface for the long-term protection of a metal substrate [46,47].…”

Section: Stability Of Three-layer Core-shell Emulsionmentioning

confidence: 62%

Enhanced Anticorrosion Properties through Structured Particle Design of Waterborne Epoxy-Styrene-Acrylate Composite Emulsion

et al. 2021

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In order to develop a waterborne epoxy-styrene–acrylate composite latex with a better stability and anticorrosion resistance, a novel synthetic approach has been proposed. First, modified by methyl acrylic, epoxy resin containing terminal C=C double bonds was successfully synthesized, where epoxide groups were partially retained. Then, by structural design and multi-stage seed emulsion copolymerization, a stable waterborne epoxy-styrene-acrylate composite latex composed of a modified epoxy resin acrylate polymer as the core, inert polystyrene ester as the intermediate layer, and carboxyl acrylate polymer as the shell was successfully fabricated. The structure of the obtained latex was characterized by fourier transform infrared (FTIR) and transmission electron microscopy (TEM). The stability of the composite latex was tested based on the wet gel weight, Zeta potential, and storage stability, and the corrosion resistance of the composite latex films was analyzed by electrochemical measurements and salt spray tests. The thickness of each layer of the composite latex was calculated by the temperature random multi-frequency modulation DSC (TOPEM-DSC) technique. In addition to the successful emulsion copolymerization that occurred between the modified epoxy resin and acrylate monomer, the presence of carboxyl groups in the obtained latex was evidenced, while the epoxide groups were partially retained. The anticorrosion resistance and stability of the multilayer composite latex with the intermediate layer are better than that of the conventional core-shell latex. The outstanding stability and corrosion resistance is attributed to the multilayer core-shell structure. The TOPEM-DSC approach can accurately determine the thickness of the intermediate layer in the multilayer core-shell particles and is a new strategy for characterizing the core-shell structure of polymer particles with a similar monomer composition.

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Section: Stability Of Three-layer Core-shell Emulsionmentioning

confidence: 62%

Enhanced Anticorrosion Properties through Structured Particle Design of Waterborne Epoxy-Styrene-Acrylate Composite Emulsion

et al. 2021

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“…Sharp and well-defined bands characterize the spectra of polarized PEDOT (Figure 10). The most intense band at 1432 cm −1 is assigned to the C α =C β symmetric stretch, and that at 1512 cm −1 is the C α =C β asymmetric stretch [31][32][33][34][35]. The bands at 1364 and 1269 cm −1 correspond to the C β =C β symmetric stretch and C α -C α stretch, respectively [35].…”

Section: Raman Spectroscopymentioning

confidence: 99%

“…The peak at 169.0 eV indicates sulfur oxidation in the PEDOT thiophene ring [30]. S=O groups can form after prolonged exposure to dissolved oxygen due to oxidation of the thiophene sulfur [29][30][31][32][33].…”

Section: Xpsmentioning

confidence: 99%

“…, x FOR PEER REVIEW 14 of 19 degradation of the polymer film [33]. The formation of the C=O bond implies the breaking of the π-conjugation of the thiophene ring [29,32,33].…”

Section: Xpsmentioning

confidence: 99%

“…, x FOR PEER REVIEW 14 of 19 degradation of the polymer film [33]. The formation of the C=O bond implies the breaking of the π-conjugation of the thiophene ring [29,32,33]. DO in the test media can attack the PEDOT chain during the prolonged immersion test period to promote their degradation [34][35][36][37].…”

Section: Xpsmentioning

confidence: 99%

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Effect of Redox Switch, Coupling, and Continuous Polarization on the Anti-Corrosion Properties of PEDOT Film in NaCl Solution

et al. 2023

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Conjugated poly(3,4-ethylenedioxythiophene) (PEDOT) film was electrochemically synthesized on stainless steel (SS). Redox interactions between the PEDOT film and the SS substrate were examined in 3.5 wt.% NaCl aqueous solution with the aid of electrochemical and spectroscopic analyses. The results show that the PEDOT film exhibited a barrier effect and mediated the oxygen reduction reaction, thus hindering ion diffusion to the steel substrate. Localized electrochemical impedance spectroscopy (LEIS) of the scratched area on the polymer film shows that PEDOT healed the defect by coupling with redox reactions on the steel surface to prevent charge localization and concentration. The electroactivity of the polymer film declined when PEDOT was polarized at potentials >−0.7 V. Prolonged exposure of the PEDOT film to dissolved oxygen in NaCl solution resulted in the polymer’s over-oxidation (degradation), evidenced by the formation of a carbonyl group in the spectroscopic result. The degradation of PEDOT was attributed to chain scissoring due to hydroxide ion attacks on the polymer chain.

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Integrated Anticorrosion and Antifouling Coatings

Kumari,

Jangid,

Kumar

et al. 2024

Novel Anti‐Corrosion and Anti‐Fouling Coatings and Thin Films

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Corrosion behavior of plasma electrolysis layer cross-linked with a conductive polymer coating

Cited by 18 publications

References 40 publications

Enhanced Anticorrosion Properties through Structured Particle Design of Waterborne Epoxy-Styrene-Acrylate Composite Emulsion

Enhanced Anticorrosion Properties through Structured Particle Design of Waterborne Epoxy-Styrene-Acrylate Composite Emulsion

Effect of Redox Switch, Coupling, and Continuous Polarization on the Anti-Corrosion Properties of PEDOT Film in NaCl Solution

Integrated Anticorrosion and Antifouling Coatings

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