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

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

Authors: Rafida Ahmad Jaal, Mokhtar Che Ismail, Bambang Ariwahjoedi

Journal: ARPN Journal of Engineering and Applied Sciences

HEC Recognition History
Category From To
Y 2023-07-01 2024-09-30
Y 2022-07-01 2023-06-30
Y 2021-07-01 2022-06-30
X 2020-07-01 2021-06-30

Publisher: Khyber Medical College, Peshawar

Country: Pakistan

Year: 2016

Volume: 11

Issue: 22

Language: English

Categories
Inhibitors (4) Critical Micelle Concentration (1) Electrochemical Measurement (1) Electrochemistry (255) Corrosion Engineering (48)

Abstract

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.

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