介电谱
腐蚀
缓蚀剂
壳聚糖
吸附
材料科学
电化学
阴极保护
扫描电子显微镜
核化学
化学工程
高分子
极化(电化学)
溶解度
冶金
化学
复合材料
有机化学
物理化学
电极
生物化学
工程类
作者
Dheeraj Singh Chauhan,Khadija El Mouaden,M.A. Quraishi,L. Bazzi
标识
DOI:10.1016/j.ijbiomac.2020.02.283
摘要
Chitosan was chemically functionalized using aminotriazolethiol in a facile single-step synthesis. The macromolecule was evaluated as an inhibitor for corrosion of stainless steel in 3.5% NaCl solution. A detailed electrochemical investigation employing electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP) was performed, which showed that the inhibitor acts by adsorption on the steel surface and shows a mixed type behavior with the prevalence of cathodic behavior. The new inhibitor aminotriazolethiol-modified chitosan (ATT-Cht) exhibited excellent water solubility and behaved as an efficient inhibitor against corrosion of stainless steel in 3.5% NaCl showing a corrosion inhibition efficiency of 97.8% at a concentration as low as 100 mg L-1. The results of surface studies using scanning electron microscopy along with energy dispersive X-ray spectroscopy supported the adsorption of the inhibitor on the steel surface.
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