Experimental and Theoretical Evaluation on the Effect of the Terminal Side Chain of a Polymeric Surfactant on the Inhibition Efficiency of Aluminum Corrosion in Acid Medium

被引：11
|
作者：
Sayyah, S. M. [1 ]
El-Deeb, M. M. [1 ,2 ]
Abd El-Rehim, S. S. [3 ]
Ghanem, R. A. [4 ]
Mohamed, S. M. [1 ]
机构：
[1] Beni Suef Univ, Fac Sci, Dept Chem, Polymer Res Lab, Bani Suwayf 62514, Egypt
[2] Hail Univ, Fac Sci, Dept Chem, Hail 81451, Saudi Arabia
[3] Ain Shams Univ, Dept Chem, Fac Sci, Abasia, Egypt
[4] Univ A al Bayt, Dept Chem, Mafraq 25113, Jordan
来源：
PORTUGALIAE ELECTROCHIMICA ACTA | 2014年 / 32卷 / 06期
关键词：
Corrosion; Polymers; Electrochemical Techniques; Adsorption; Thermodynamic Properties; Computational Techniques;
D O I：
10.4152/pea.201406417
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Inhibition effect of poly 3-dodecyloxy aniline polymeric surfactant (PC12H) on the corrosion of aluminum in 0.5 M HCl solution was investigated using potentiodynamic polarization technique under different experimental conditions. Inhibition efficiency and thermodynamic functions for dissolution and adsorption of PC12H are compared with Poly 3-(dodecyloxy sulfonic acid) aniline (PC12SO3H) to explain the effect of terminal side chain on the corrosion protection. Data show that the presence of -SO3H as a terminal group in PC12SO3H decreases the inhibition efficiency from 88.7%, in case of PC12H, to 55.1% in case of PC12SO3H. Quantum chemical calculations were performed on PC12H and PC12SO3H to investigate the relationship between the molecular structures and their inhibition efficiencies.
引用
收藏
页码：417 / 429
页数：13
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