Chemistry Department, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia.
Chemistry Department, Faculty of Science, Sohag University, Sohag 82534, Egypt.
Molecules. 2023 Jun 3;28(11):4540. doi: 10.3390/molecules28114540.
Novel imine-tethering cationic surfactants, namely (E)-3-((2-chlorobenzylidene)amino)--(2-(decyloxy)-2-oxoethyl)--dimethylpropan-1-aminium chloride (ICS-10) and (E)-3-((2-chlorobenzylidene)amino)--dimethyl--(2-oxo-2-(tetradecyloxy)ethyl)propan-1-aminium chloride (ICS-14), were synthesized, and the chemical structures were elucidated by various spectroscopic approaches. The surface properties of the target-prepared imine-tethering cationic surfactants were investigated. The effects of both synthesized imine surfactants on carbon steel corrosion in a 1.0 M HCl solution were investigated by weight loss (WL), potentiodynamic polarization (PDP), and scanning electron microscopy (SEM) methods. The outcomes show that the inhibition effectiveness rises with raising the concentration and diminishes with raising the temperature. The inhibition efficiency of 91.53 and 94.58 % were attained in the presence of the optimum concentration of 0.5 mM of ICS-10 and ICS-14, respectively. The activation energy () and heat of adsorption () were calculated and explained. Additionally, the synthesized compounds were investigated using density functional theory (DFT). Monte Carlo (MC) simulation was utilized to understand the mechanism of adsorption of inhibitors on the Fe (110) surface.
新型亚胺键合阳离子表面活性剂，即(E)-3-((2-氯亚苄基)氨基)--(2-(癸氧基)-2-氧代乙基)--二甲基丙-1-铵氯化物（ICS-10）和(E)-3-((2-氯亚苄基)氨基)--二甲基--(2-氧代-2-(十四烷氧基)乙基)丙-1-铵氯化物（ICS-14），被合成，并通过各种光谱方法阐明了它们的化学结构。研究了目标制备的亚胺键合阳离子表面活性剂的表面性质。通过重量损失（WL）、动电位极化（PDP）和扫描电子显微镜（SEM）方法研究了这两种合成亚胺表面活性剂对碳钢在 1.0 M HCl 溶液中腐蚀的影响。结果表明，随着浓度的升高，抑制效率升高，随着温度的升高而降低。在 0.5 mM 的最佳浓度下，ICS-10 和 ICS-14 的抑制效率分别达到 91.53%和 94.58%。计算并解释了活化能()和吸附热()。此外，还使用密度泛函理论（DFT）对合成化合物进行了研究。利用蒙特卡罗（MC）模拟来理解抑制剂在 Fe（110）表面上吸附的机制。
