Electrochemical synthesis of polyindole on 304-stainless steel in LiClO4–acetonitrile solution and its corrosion performance

Düdükcü, Meltem; Köleli, Fatih

doi:10.1016/j.porgcoat.2006.01.004

Cited by 21 publications

(6 citation statements)

References 17 publications

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“…The role of these species, in processes occurring in aqueous solutions, is not investigated. For instance, indole and substituted indoles are used as a corrosion inhibitor for ferrous and nonferrous alloys, but the nature of the protective phenomenon is not completely understood and the role of the indole polymers is only faintly explored 6–9.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamics and kinetics of indole oligomerization: Preliminary results in aqueous sulfuric acid

Quartarone

Ronchin

Tortato

et al. 2008

Int J of Chemical Kinetics

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Reaction rates and equilibrium constants of indole dimerization and trimerization in aqueous sulfuric acid at 298 K are reported. The equilibrium of oligomerization is attained in about 4–5 h, and formation of oligomers with more than three monomeric unit is not observed. The equilibrium of formation of the indole dimer is inﬂuenced by the protonation equilibrium of indole, which means the p K IH values of indole strongly inﬂuences equilibria and kinetics of the whole process. In the evaluation of the kinetic constants, the p K IH values of indole have been taken into account; in this way, the kinetic constant of formation of the dimer (kD ) results almost four order of magnitude larger than that of the trimer (kT ), suggesting a higher electrophilicity of the 3H-indolium cations with respect to the protonated dimer (which is an aliphatic ammonium salt). Further indole addition to the trimer, which is a protonated 2-alkyl- aniline, does not occur, since the anilinium ion is ineffective as an electrophile

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Section: Introductionmentioning

confidence: 99%

Thermodynamics and kinetics of indole oligomerization: Preliminary results in aqueous sulfuric acid

Quartarone

Ronchin

Tortato

et al. 2008

Int J of Chemical Kinetics

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“…Deviations of this kind are mostly referred as the frequency dispersion and they are attributed to irregularities and heterogeneities of the solid surfaces [27]. The high frequency capacitive loops were attributed to charge transfer process at the mild steel/polymer film interface while the low frequency linear parts which are indicative of the barrier effect of coating against the diffusion to the Warburg diffusion parameter [28,29]. This observation is also verified by the θ-log(freq) plots given in Fig.…”

Section: Corrosion Testsmentioning

confidence: 56%

Copper modified poly-6-amino-m-cresol (poly-AmC/Cu) coating for mild steel protection

Keleş

Solmaz

Özcan

et al. 2009

Surface and Coatings Technology

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“…[37] The increasing Fe ions (Fe 2+ and Fe 3+ ) are transformed into the passive Fe 2 O 3 and Fe3O4 as an oxide layer in the neutral environment. [38][39][40][41]…”

Section: Salt Spraymentioning

confidence: 99%

Synergistic effect of graphene polyindole nanocomposite for enhanced corrosion protection of aqueous coating in 3.5% NaCl solution for low carbon steel

et al. 2020

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Graphene polyindole (Gr@PIn) nanocomposite with varying content of graphene was synthesized via an in‐situ redox polymerization doping technique. The techniques like FT‐IR, XRD, SEM, and TEM were utilized to characterize the produced nanocomposites. The produced nanocomposites were cast on LCS (low carbon steel) substrate employing NMP as a solvent, 10% epoxy as a binder, and triethylenetetramine as a curing agent. The anti‐corrosion ability of the Gr@PIn nanocomposite coatings was established by performing corrosion tests such as OCP, EIS, PDP measurements, Salt spray test, and Wettability test. Gr@PIn coating was observed as an effective anti‐corrosion coating for LCS substrate in 3.5 wt.% NaCl. The anticorrosion behavior of coating was dependent on graphene content; the higher content of graphene providing higher protection. The anticorrosion performance of Gr@PIn nanocomposite coating was also compared with that of Polyindole (PIn) coating and bare steel.

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Electrochemical synthesis of polyindole on 304-stainless steel in LiClO4–acetonitrile solution and its corrosion performance

Cited by 21 publications

References 17 publications

Thermodynamics and kinetics of indole oligomerization: Preliminary results in aqueous sulfuric acid

Thermodynamics and kinetics of indole oligomerization: Preliminary results in aqueous sulfuric acid

Copper modified poly-6-amino-m-cresol (poly-AmC/Cu) coating for mild steel protection

Synergistic effect of graphene polyindole nanocomposite for enhanced corrosion protection of aqueous coating in 3.5% NaCl solution for low carbon steel

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