Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry
ISSN: 0975-413X
Abstract
Application of hexa propylene glycol cyclotriphosphazene as corrosion inhibitor for copper in 3% NaCl solution
Author(s): O. Dagdag, M. El Gouri, M. Galai, M. Ebn Touhami, A. Essamri and A. ElharfiThe product namely Hexa Propylene Glycol Cyclotriphosphazene (HPGCP) was synthesized and its inhibitive performance as corrosion inhibitor towards the corrosion of copper in neutral solution of 3% NaCl has been investigated using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM). Polarization curves indicate that HPGCP is a mixed inhibitor, affecting both cathodic and anodic corrosion currents. The inhibition efficiency of HPGCP, which reached 96 %, was observed in 10-3 M concentration. The adsorption of the inhibitor on the copper surface in the 3% NaCl solution was found to obey Langmuir’s adsorption isotherm. The inhibition mechanism was determined by potential of zero charge measurements and some electronic parameters.
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Citations : 15261
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