Determination of critical micelle concentration (CMC) of corrosion inhibitor via electrochemical measurement

The critical micelle concentration (CMC) of an imidazoline-based corrosion inhibitor in CO2-saturated 3 NaCl solution was determined via electrochemical measurements, namely electrochemical impedance spectroscopy and linear polarization resistance. The electrochemical parameters, polarization resist...

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Bibliographic Details
Main Authors: Jaal, R.A., Ismail, M.C., Ariwahjoedi, B.
Format: Article
Published: Asian Research Publishing Network 2016
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007240840&partnerID=40&md5=9d28e09b075e51998d863cf3aa823b75
http://eprints.utp.edu.my/25367/
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Summary:The critical micelle concentration (CMC) of an imidazoline-based corrosion inhibitor in CO2-saturated 3 NaCl solution was determined via electrochemical measurements, namely electrochemical impedance spectroscopy and linear polarization resistance. The electrochemical parameters, polarization resistance (Rp) and charge transfer resistance (Rct), were plotted against the inhibitor concentrations. CMC of the studied inhibitor was determined from the plots, where the slope changed their values. Analysis of the impedance data revealed that the adsorbed inhibitor films had different structures, which were influenced by the concentration of the inhibitor. © 2006-2016 Asian Research Publishing Network (ARPN).