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AuthorRashid, Mohd
AuthorSabir, Suhail
AuthorWaware, Umesh
AuthorRahim, Afidah A.
Available date2016-09-21T08:12:10Z
Publication Date2014
Publication NameAnti-Corrosion Methods and Materials
CitationMohd Rashid , Suhail Sabir , Umesh Waware , Afidah A. Rahim , (2014) "Electropolymerization of poly(aniline-co-p-toluidine) on copper and its application as a corrosion inhibitor", Anti-Corrosion Methods and Materials, Vol. 61 Iss: 5, pp.334 - 342
AbstractThis paper aims to compare the inhibitive effects of polyaniline (PAni), poly(p-toluidine) and poly(aniline-co-p-toluidine) in hydrochloric acid (HCl) solution. Design/methodology/approach – The electrochemical deposition of PAni, poly(p-toluidine) and poly(aniline-co-p-toluidine) on pure copper metal was studied potentiodynamically. The copolymer deposited was characterized by Fourier transform infrared (FTIR) spectroscopy, ultraviolet (UV)-visible spectroscopy and scanning electron microscopy (SEM). The corrosion inhibition studies on copper electrode were performed using electrochemical methods, viz, open circuit potential (OCP) measurements, potentiodynamic polarization scans and electrochemical impedance spectroscopy (EIS) tests, conducted in 0.1 M HCl solution. Finding – The results of the study reveal that the copolymer of poly(aniline-co-p-toluidine) at the optimum concentration of 1 × 10−3 M has better corrosion inhibition efficiency as compared to PAni and poly(p-toluidine). Research limitations/implications – The conducting polymers are difficult to deposit on the metal surface because of their high dissolution tendency before the electropolymerization potential of the monomer is achieved. Practical implications – From an environmental viewpoint, poly(aniline-co-p-toluidine) is a toxic and hazardous conducting polymer. Originality/value – The paper demonstrates that poly(aniline-co-p-toluidine) showed better dispersion in different organic solvents and had higher corrosion inhibition efficiency than PAni.
PublisherEmerald Group Publishing Ltd.
SubjectCorrosion inhibition
SubjectImpedance spectroscopy
SubjectPotentiodynamic polarization
TitleElectropolymerization of poly(aniline-co-p-toluidine) on copper and its application as a corrosion inhibitor
Issue Number5
Volume Number61

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