Synthesis, characterization and application of acrylate-based poly ionic liquid for corrosion protection of C1020 steel In hydrochloric acid solution

Abstract

Poly ionic liquids (PIL) are eco-friendly in addition to being sustainable compounds that can be easily prepared and tailored according to the application. In this study, a novel PIL polymer based on acrylate was chemically synthesised via free radical polymerization method controlled by quenching the reversible reaction. The prepared 1-Butyl-3 Methylimidazolium Acrylate polymer (PAL) was characterised using FTIR as well as NMR to confirm the chemical structure. GPC was employed to determine the average molecular weight of the new polymer. PAL was applied as an effective corrosion inhibitor for C1020 steel in 1M HCl aqueous solution. Weight loss and electrochemical techniques, PDP and EIS, were applied to evaluate the corrosion inhibition performance. The electrochemical results showed that PAL acts as a mixed-type inhibitor reaches 91.8% at room temperature. The thermodynamic calculations showed that the adsorption process is exothermic. Furthermore, PAL molecules were adsorbed on the metal surface by both chemisorption and physisorption processes. SEM analysis was carried out to confirm the corrosion evaluation results. Also, quantum chemical calculations, at the B3LYP/DND level of theory, were carried out to correlate the electronic structure parameters of PAL inhibitor to its adsorption behaviour which in turn is relevant to the inhibition efficiency. Additionally, Monte Carlo simulation (MC) was conducted to investigate the adsorption modes and the interaction energies of the inhibitor on iron surface.

Anticorrosion Study for Brass Alloys in Heat Exchangers during Acid Cleaning Using Novel Gemini Surfactants Based on Benzalkonium Tetrafluoroborate

“…The cathodic reaction is predominantly slowed in the system without the inhibitor. 32 , 33 The corrosion inhibitor compounds can be labeled as the anodic or cathodic type when the shift in E corr is at higher than 85 mV with respect to the blank solution. 34 E corr differs by less than 85 mV between the inhibited and uninhibited systems, implying that the GS is a mixed-type inhibitor.…”

“…When compared to those of the system without the inhibitor, the potential curves move toward higher negative potentials, showing that the cathodic reaction is largely slowed. The cathodic reaction is predominantly slowed in the system without the inhibitor. , The corrosion inhibitor compounds can be labeled as the anodic or cathodic type when the shift in E corr is at higher than 85 mV with respect to the blank solution …”

Novel Poly(ionic liquid) Augmented Membranes for Unconventional Aqueous Phase Applications in Fractionation of Dyes and Sugar

“…Figure 6 shows the FTIR spectra for polyamide inert support layer and PIL augmented membranes to monitor the changes in functionalities on PIL augmentation. The polyimide base membrane and both PIL modified membranes exhibit two distinctive peaks around 1535 cm −1 to 1642cm −1 which correspond to the amide moieties from polyimide support and was seen in case of virgin membrane as well as PIL modified membranes [ 36 ]. Kamaz et al reported the pressure-assisted deposition PILs from 2 vinyl and 4 vinyl pyridines on same polyamide support.…”

“…Further research and implementation of polyionic liquids as novel antibacterial agents can decrease antibiotic drug resistance [ 33 , 34 ]. Grafting PIL brushes on the membrane surface was reported to exhibit the electrical response in presence of external oscillating electric field [ 35 , 36 ]. A pressure-assisted self-assembly method was used to deposit the selective poly(ionic) liquid layer onto the polyimide support [ 37 ].…”

Synthesis of a novel Ce(iii)/melamine coordination polymer and its application for corrosion protection of AA2024 in NaCl solution

“…The potentiodynamic polarization curves were obtained in the potential range of −250 to +250 mV with respect to open-circuit potential (OCP) at a scan rate of 0.5 mV s −1 . The inhibition efficiency (IE) was calculated using the following relation: 31 where: is the corrosion current density of blank sample and I corr is the corrosion current density of inhibited sample.…”