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Preparation and evaluation of amido poly amine surfactant based on Melia azedarach seeds oil as corrosion inhibitor of C-steel in 2.0 M HCl pickling medium

Green Chemistry Letters and Reviews • 2017
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Publication Information
Authors Asmaa A. I. Ali & Wagdy I. A. El-Dougdoug
Keywords C-steel; adsorption; EIS;potentiodynamic , polarization; synthesis of MAamido surfactant
Journal Green Chemistry Letters and Reviews
Publisher Taylor & Francis
Volume VOL. 10,
Issue NO. 4,
Pages 346–358
publication.type International
Paper Link Open Link
Supplementary Materials Wagdi Ali_Preparation and evaluation of amido poly amine surfactant based on Melia azedarach seeds oil as corrosion inhibitor of C steel in 2 0 M HCl pickling.pdf
Abstract
ABSTRACT
Oil of Melia azedarach seeds (MA-oil) was extracted and modified in the form of amido poly amine
surfactant (MA-amido surfactant). The surface active properties of the new MA-amido surfactant
were analyzed. Corrosion inhibition of C-steel in 2.0 M HCl by MA-amido surfactant was
investigated using weight loss (WL), potentiodynamic polarization (PDP) and electrochemical
impedance spectroscopy (EIS). The results indicated that the corrosion of C-steel was obviously
reduced. PDP curves showed that the MA-amido surfactant behaves as a mixed-type inhibitor.
The adsorption process at the C-steel surface obeys Langmuir adsorption isotherm model. The
activation and thermodynamic parameters of the adsorption were evaluated and discussed. The
protective film at the metal surface was characterized by a scanning electron microscope (SEM).