Electrochemical synthesis of poly-3-amino-5-mercapto-1,2,4-triazole on copper and its protective effect in 3.5?% NaCl medium

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• 作者：G. Rajkumar ; M. G. Sethuraman
• 关键词：3 ; Amino ; 5 ; mercapto ; 1 ; 2 ; 4 ; triazole ; Polymer ; Coatings ; Corrosion protection ; Impedance
• 刊名：Research on Chemical Intermediates
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：41
• 期：11
• 页码：8041-8055
• 全文大小：1,153 KB
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• 作者单位：G. Rajkumar (1)
  M. G. Sethuraman (1)
  
  1. Department of Chemistry, Gandhigram Rural Institute, Deemed University, Gandhigram, Dindigul, 624 302, TN, India
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Catalysis
  Physical Chemistry
  Inorganic Chemistry
  
• 出版者：Springer Netherlands
• ISSN：1568-5675

文摘

Electropolymerization of 3-amino-5-mercapto-1,2,4-triazole (AMTA) on copper was carried out in methanol/NaOH solution by cyclic voltammetry. Chronoamperometry technique was used to investigate the formation kinetics of the polymer film. The effect of scan rate was also studied. Electropolymerized film of AMTA was duly characterized by Fourier transform infrared spectroscopy. Scanning electron microscopy was used to analyze the surface morphology of the polymer film. The protective ability of poly-3-amino-5-mercapto-1,2,4-triazole (p-AMTA) film was determined by electrochemical impedance spectroscopy and potentiodynamic polarization studies in NaCl medium. The results of the study showed that the p-AMTA film on copper afforded significant corrosion protection in neutral medium. Quantum theoretical studies revealed the adsorptive behavior of AMTA on copper. Keywords 3-Amino-5-mercapto-1,2,4-triazole Polymer Coatings Corrosion protection Impedance