Polyaniline/chitosan as a corrosion inhibitor for mild steel in acidic medium

Abstract

One-pot synthesis route for PANI/CTS preparation. The inhibition performance of PANI/CTS on metal corrosion in 0.5 M HCl was studied using electrochemical measurements and quantum chemical calculations.

Aniline trimer-including carboxymethylated β-cyclodextrin as an efficient corrosion inhibitor for Q235 carbon steel in 1 M HCl solution

“…As seen in Table 1, the i corr values decreased signicantly with the increase of inhibitor concentration, and the values of the inhibition efficiencies are 95.7% for 50 mg L À1 , 95.8% for 100 mg L À1 , 97.9% for 150 mg L À1 , 98.5% for 200 mg L À1 and 99.2% for 250 mg L À1 of AT-CM-b-CD, respectively. Compared with some work, [27][28][29] the inhibitor of AT-CM-b-CD have a better inhibition effect on carbon steel. The results indicated that the b a value changes signicantly in the presence of AT-CM-b-CD, due to the adsorption of chloride ions or inhibitor molecules on the active sites on the metal surface.…”

Multidimensional Study On The Corrosion Inhibition of Polypyrrole-Chitosan (PPy-CTS) Composites For Carbon Steel In Acid Medium

“…This revealed that PPy-CTS inhibited synchronously cathodic hydrogen evolution reaction and anodic metal dissolution reaction in the corrosion of carbon steel, and the cathode reaction was more inhibited than the anode reaction. Meanwhile, the displacement of Ecorr was less than 85 mV 26 , indicating that PPy-CTS was a hybrid corrosion inhibitor. Therefore, as a hybrid corrosion inhibitor with cathodic inhibition as the mainstay 27 , PPy-CTS had good corrosion inhibition effect.…”

Recent developments in sustainable corrosion inhibitors: design, performance and industrial scale applications

“…SEM and EDX studies were undertaken to demonstrate the adsorption nature of corrosion protection. [156][157][158], chitosan-hydroxyapatite [159][160][161][162][163], chitosan-polyamines [135], chitosan-drug [164], chitosan-polymer [142,146,165,166], chitosan-boron nitrile [167], chitosan-nanocomposites [168][169][170], carboxymethyl chitosan grafted poly(2-methyl-1-vinylimidazole) [171,172], sulfonated chitosan [173,174], chitosanpolymer blends [142,175], etc. chitosan based compounds are widely used as anticorrosive materials.…”

“…It is important to mention that these formulations exhibit superior anticorrosive property than that of the pure chitosan. Kong et al synthesized a chitosan-polyaniline (PANI/CTS and tested its anticorrosive effect for Q235 steel in acidic medium[146]. Electrochemical studies demonstrate that PANI/CTS manifests mixed-type nature.…”