Synthesis investigation and exploring of new tetraglycidyl bisurea bisphenyl S polyepoxide as an excellent corrosion inhibitory resin for mild steel in 1M HCl environment: Comprehensive approaches

IF 5.3 2区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Molecular Liquids Pub Date : 2024-11-09 DOI:10.1016/j.molliq.2024.126459

M. Azogagh , A. El Magri , R. Hsissou , R. Lachhab , Konstantin P. Katin , Elyor Berdimurodov , M. Galai , S.E. Hegazi , M. Rafik

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引用次数: 0

Abstract

This work reports the synthesis of new epoxy resin namely tetraglycidyl bisurea bisphenyl S (TGBUBS). TGBUBS was characterized through using nuclear magnetic resonance (¹H NMR and ¹³C NMR) and attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR). TGBUBS was investigated as an excellent organic inhibitor for protecting the mild steel from corrosion in 1M HCl solution at different concentrations. Anticorrosion protection behaviors were evaluated and more discussed including different techniques such as potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and contact angle (CA) measurements. The obtained results showed that the TGBUBS exhibited inhibition efficiencies at lower concentration are 93.19 % (PDP) and 91.21 % (EIS), respectively. Further, PDP measurements indicated that the TGBUBS acted as a mixed-type inhibitor in 1M HCl solution. Furthermore, SEM and EDS analysis showed a significant reduction in the corrosion on the mild steel surface when the inhibitory epoxy resin was present compared to the blank solution (1M HCl). The effectiveness and interactions of the new epoxy resin on the mild steel surface were also predicted using DFT calculations and molecular dynamics (MD) simulations. The theoretical approaches are in agreement with the experiment results.

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新型四缩水甘油双酚 S 多环氧化物的合成研究与探索--在 1M HCl 环境中作为低碳钢的优良缓蚀树脂：综合方法

本研究报告介绍了一种新型环氧树脂--四缩水甘油双酚 S（TGBUBS）的合成。通过使用核磁共振（1H NMR 和 13C NMR）和衰减全反射傅立叶变换红外光谱（ATR-FTIR）对 TGBUBS 进行了表征。研究发现，TGBUBS 是一种优异的有机抑制剂，可在不同浓度的 1M HCl 溶液中保护低碳钢免受腐蚀。通过电位极化（PDP）、电化学阻抗光谱（EIS）、扫描电子显微镜（SEM）、能量色散 X 射线光谱（EDS）和接触角（CA）测量等不同技术对其防腐性能进行了评估和讨论。结果表明，TGBUBS 在较低浓度下的抑制率分别为 93.19 %（PDP）和 91.21 %（EIS）。此外，PDP 测量结果表明，TGBUBS 在 1M HCl 溶液中起着混合型抑制剂的作用。此外，SEM 和 EDS 分析表明，与空白溶液（1M HCl）相比，存在抑制性环氧树脂时低碳钢表面的腐蚀明显减少。此外，还利用 DFT 计算和分子动力学（MD）模拟预测了新型环氧树脂在低碳钢表面的功效和相互作用。理论方法与实验结果一致。

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来源期刊

Journal of Molecular Liquids 化学-物理：原子、分子和化学物理

CiteScore

10.30

自引率

16.70%

发文量

2597

审稿时长

78 days

期刊介绍： The journal includes papers in the following areas: – Simple organic liquids and mixtures – Ionic liquids – Surfactant solutions (including micelles and vesicles) and liquid interfaces – Colloidal solutions and nanoparticles – Thermotropic and lyotropic liquid crystals – Ferrofluids – Water, aqueous solutions and other hydrogen-bonded liquids – Lubricants, polymer solutions and melts – Molten metals and salts – Phase transitions and critical phenomena in liquids and confined fluids – Self assembly in complex liquids.– Biomolecules in solution The emphasis is on the molecular (or microscopic) understanding of particular liquids or liquid systems, especially concerning structure, dynamics and intermolecular forces. The experimental techniques used may include: – Conventional spectroscopy (mid-IR and far-IR, Raman, NMR, etc.) – Non-linear optics and time resolved spectroscopy (psec, fsec, asec, ISRS, etc.) – Light scattering (Rayleigh, Brillouin, PCS, etc.) – Dielectric relaxation – X-ray and neutron scattering and diffraction. Experimental studies, computer simulations (MD or MC) and analytical theory will be considered for publication; papers just reporting experimental results that do not contribute to the understanding of the fundamentals of molecular and ionic liquids will not be accepted. Only papers of a non-routine nature and advancing the field will be considered for publication.