Study of synergistic influence of l-cysteine on polyvinyl alcohol - Taguchi method: continuous electrochemical monitoring of corrosion inhibition of mild steel by poly(vinyl alcohol-cysteine)

Parametric optimization for better synergism between polyvinyl alcohol (PVA) and l-cysteine was optimized using Taguchi design, a statistical approach. The corrosion inhibition property of poly(vinyl alcohol-cysteine) (PVAC) on mild steel corrosion was continuously monitored using electrochemical te...

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Bibliographic Details
Published in:Journal of adhesion science and technology 2015-06, Vol.29 (12), p.1268-1294
Main Authors: Ali Fathima Sabirneeza, A., Subhashini, S.
Format: Article
Language:English
Subjects:
acid inhibition
adsorption
AFM
Carbon steels
Corrosion
Corrosion inhibitors
Inhibition
mild steel
poly(vinyl alcohol-cysteine)
Polyvinyl acetates
Polyvinyl alcohols
PVAc
Steel
Surface chemistry
Temperature effects
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Summary:Parametric optimization for better synergism between polyvinyl alcohol (PVA) and l-cysteine was optimized using Taguchi design, a statistical approach. The corrosion inhibition property of poly(vinyl alcohol-cysteine) (PVAC) on mild steel corrosion was continuously monitored using electrochemical techniques such as polarization and impedance methods. Continuous monitoring of the system reveals the formation of stable film on the metal surface. Temperature effect on the inhibition properties of PVAC was studied using electrochemical measurements. Calculated kinetic and thermodynamic parameters supported the spontaneous adsorption of PVAC. Atomic force microscopic and laser profiler analysis confirmed the adsorption of PVAC on mild steel surface. Theoretical calculations using Hyperchem 7.0 proved the better corrosion mitigation properties of PVAC compared to PVA.
ISSN:0169-4243
1568-5616
DOI:10.1080/01694243.2015.1025464