Zhuang Wenchang, Wang Xiqiu, Zhu Wenyou, Zhang Yukun, Sun Dan, Zhang Rui, Wu Chunyan
School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, P. R. China.
College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China.
ACS Omega. 2021 Feb 19;6(8):5653-5660. doi: 10.1021/acsomega.0c06103. eCollection 2021 Mar 2.
The Gemini imidazoline surfactants were synthesized from a series of saturated fatty acids. Electrochemical impedance spectroscopy (EIS), polarization curve, and quantum chemistry methods were used to study the corrosion inhibition behavior of Gemini imidazoline surfactants for X70 carbon steel in NaCl solution. Results reveal that such kind of surfactants has an outstanding inhibition effect on carbon steel X70 in NaCl solution and that the restrained efficiency of Gemini imidazoline in an alkaline solution is better than that in a neutral solution. The shorter the carbon chain length, the higher the suppressive efficiency. The higher the concentration of Gemini imidazoline surfactant, the better the inhibition effect.
Gemini咪唑啉表面活性剂由一系列饱和脂肪酸合成。采用电化学阻抗谱（EIS）、极化曲线和量子化学方法研究了Gemini咪唑啉表面活性剂在NaCl溶液中对X70碳钢的缓蚀行为。结果表明，这类表面活性剂在NaCl溶液中对X70碳钢具有优异的缓蚀效果，且Gemini咪唑啉在碱性溶液中的缓蚀效率优于中性溶液。碳链长度越短，缓蚀效率越高。Gemini咪唑啉表面活性剂浓度越高，缓蚀效果越好。
