Effect of some substituted anilines‐formaldehyde polymers on mild steel corrosion in hydrochloric acid medium |
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| Authors: | Sudhish Kumar Shukla Mumtaz Ahmad Quraishi |
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| Affiliation: | Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi 221005, India |
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| Abstract: | The influence of linear copolymer of amines and formaldehyde namely poly(aniline‐formaldehyde) (Inh1), poly(o‐toluidene‐formaldehyde) (Inh2), and poly(p‐chloroaniline‐formaldehyde) (Inh3) on corrosion of mild steel in hydrochloric acid was evaluated by weight loss measurements, linear polarization, Tafel polarization, and electrochemical impedance spectroscopy. These polymers showed very high inhibition efficiency at very low concentrations. Results obtained showed that all inhibitors are mixed inhibitors and participate in reaction probably in the form of metal inhibitor complex on metal surface. Atomic force microscopic studies reveal that the surface of metal is quite unaffected after use of inhibitor in hydrochloric acid solution. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011 |
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| Keywords: | adsorption atomic force microscopy copolymerization mild steel corrosion inhibition |
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