Interdisciplinary Research Center for Advanced Materials, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
Interdisciplinary Research Center for Advanced Materials, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
Adv Colloid Interface Sci. 2022 Aug;306:102723. doi: 10.1016/j.cis.2022.102723. Epub 2022 Jun 25.
Organic compounds have been recognized as one of the utmost operative corrosion protective measures. However, their usage and synthesis are allied with the consumption and release of malignant materials. More so, out of various manufactured and settled compounds, only a few are effective. Therefore, the high mandate is to design and formulate effective compounds based on literature outcomes. Literature outcomes suggest that surfactant molecules having alkyl substituent of neither too small nor too large act as effective aqueous phase corrosion inhibitors. The present review describes the effect of alkyl/hydrocarbon chain length on the corrosion inhibition potential of some series of surfactant molecules. Generally, an increase in the alkyl chain length favors inhibition performance due to enhancing the packing of surfactant molecules at the interface of metal and electrolyte, but a very high level of hydrophobicity disfavors the inhibition performance. Hydrophilicity and hydrophobicity can be suitably tailored by varying the number and size of the hydrocarbon chain. Organic compounds containing the hydrocarbon chain length of C-C exhibit the best inhibition efficiency (%IE). The molecules become effective by adsorbing on the metal surface. They behave as mixed- and interface-type corrosion inhibitors.
有机化合物已被公认为最有效的腐蚀防护措施之一。然而，它们的使用和合成都伴随着恶性物质的消耗和释放。更重要的是，在各种制造和使用的化合物中，只有少数是有效的。因此，迫切需要根据文献结果设计和制定有效的化合物。文献表明，烷基取代基既不过小也不过大的表面活性剂分子在水相腐蚀抑制中具有较好的效果。本综述描述了烷基/碳氢链长度对某些系列表面活性剂分子腐蚀抑制潜力的影响。一般来说，由于增强了表面活性剂分子在金属和电解质界面的组装，烷基链长度的增加有利于抑制性能，但过高的疏水性不利于抑制性能。通过改变烃链的数量和大小，可以适当调整亲水性和疏水性。含有 C-C 烃链长度的有机化合物表现出最佳的抑制效率（%IE）。这些分子通过在金属表面吸附而发挥作用。它们作为混合和界面型腐蚀抑制剂。
