期刊
JOURNAL OF MOLECULAR STRUCTURE
卷 1294, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.molstruc.2023.136466
关键词
Synthesis; PGH epoxy resin; FTIR analysis; Anticorrosive protection; PDP/EIS/EFM measurements; SEM/EDS characterization; DFT/MD approaches
In this study, a novel epoxy resin PGH was synthesized and its anticorrosive properties for mild steel in 1M HCl solution were investigated. The experiment results and theoretical calculations confirmed that PGH exhibited good inhibitory efficiency against corrosion of mild steel in 1M HCl.
In this recent work, novelty epoxy resin namely 1,3,4,5,6-pentaglycidyloxy hexan-2-one (PGH) was synthesized characterized and studied as a potential anticorrosive protection for mild steel (MS) in 1 M HCl solution. The corrosion inhibition for MS was examined by potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), electrochemical frequency modulation measurements (EFM), scanning electron microscope coupled with energy dispersive X-ray spectroscopy (MES/EDS) and theoretical approaches (DFT and MD simu-lation). PGH elaborated was investigated by the Fourier transform infrared (FTIR) spectroscopy. Additionally, the inhibitory efficiencies found at higher concentration (10-3 M of the PGH) are 85.5% (EIS) and 88.6% (PDP), respectively. PDP results indicated that the PGH acted as a mixed-type inhibitor in 1 M HCl medium. SEM/EDS characterization represents a terrific decrease in corrosion of the MS surface within 10-3 M of PGH compared with the 1.0 M HCl pure. DFT calculation provided molecular level insights on the nature and the active centres of the corrosion inhibition efficiency of the PGH elaborated. MD simulation showed that the PGH has the maximum inhibition efficiencies at oxygen atoms.
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