Two series of eco‐friendly nonionic anionic surfactants based on itaconic acid and 1, 6 hexane diol were synthesized. The chemical structures of the prepared surfactant were confirmed by FTIR and ¹H NMR spectroscopy. The prepared surfactants were evaluated to prevent the corrosion of aluminum in 1.0 M HCl solution by electrochemical and chemical methods. The data obtained showed that the prepared compounds have good inhibition efficiency (IE%) even at 10⁻⁵ M concentrations and act as mixed‐type inhibitors, they do not affect the mechanism of the electrode processes, as well as the IE% increase by increasing the concentrations of the inhibitors, immersion time, and hydrophilic chain length. The high inhibition efficiency is due to the adsorption of the inhibitors molecules on the metal surface and the formation of a protective film. The surface activities of these compounds were also investigated and were correlated to their inhibition efficiencies and chemical structure. Through studying biodegradability of the synthesized surfactants we find that they are readily biodegradable in the environment and thus they are considered as eco‐friendly corrosion inhibitors. Finally, the effect of the addition of these compounds on the aluminum surface was identified by atomic force microscopy (AFM) technique.

中文翻译：

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基于不同脂肪醇作为酸性介质中铝的缓蚀剂的新型可生物降解的非离子-阴离子表面活性剂

合成了两种基于衣康酸和1，6己二醇的环保非离子型阴离子表面活性剂。通过FTIR和¹ H NMR光谱确认了所制备的表面活性剂的化学结构。通过电化学和化学方法对制备的表面活性剂进行了评估，以防止铝在1.0 M HCl溶液中的腐蚀。获得的数据表明，即使在10 ^{-5的条件下}，制备的化合物也具有良好的抑制效率（IE％）M浓度起混合型抑制剂的作用，它们不影响电极过程的机理，也不会通过增加抑制剂的浓度，浸入时间和亲水链长来增加IE％。高抑制效率是由于抑制剂分子在金属表面上的吸附和保护膜的形成。还研究了这些化合物的表面活性，并与它们的抑制效率和化学结构相关。通过研究合成表面活性剂的生物降解性，我们发现它们在环境中易于生物降解，因此被认为是生态友好的缓蚀剂。最后，通过原子力显微镜（AFM）技术确定了在铝表面添加这些化合物的效果。