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Research on Elcetrochemical Synthesis and Anticorrosion Property of Polyaniline Composite Films

Author: WangXinYing
Tutor: XuHui
School: Lanzhou University of Technology
Course: Applied Chemistry
Keywords: polyaniline electrochemical synthesis corrosion protection tafel curves EIS
CLC: O631.3
Type: Master's thesis
Year: 2011
Downloads: 115
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Abstract


Polyaniline（PANI） is one of the most studied conducting polymers.PANI can contribute to the formation of passive metal oxide film on the surface of metal in acidic solution and this passive oxide film also can prevent further corrosion of metal.The characteristics of polyaniline has aroused a great deal of interest and is expecting an even broader prospect of application.With the rapid development of composite materials, some metal oxide, metal particles and polyaniline and its derivatives of composite membrane has been successfully synthesized.with special structure,the composite films can keep polyaniline and its derivatives based on the original performance further expand its function characteristics. Synthesised polyaniline composite films on stainless steel not only can improve the corrosion resistance of films also played better protection of stainless steel,but for electrosynthesis polyaniline composite film in corrosion resistance research reports for less.Polyaniline film was electrosynthesized on stainless steel by cyclic voltammetry（CV）.Protective properties of Pani films in corrosive solutions were investigated by monitoring potentiodynamic polarization curves and electrochemical impedance spectroscopy（EIS）.The main work is as follows:1、Polyaniline film was electrosynthesized on stainless steel by cyclic voltammetry（CV） in organic acid,inorganic acid,mixed acid and metal-doped solutions.Film in the electrochemical parameters and changes in conditions,using potentiodynamic polarization curves （Tafel curves） and electrochemical impedance spectroscopy （EIS） to characterize the corrosion resistance of polyaniline.2、PANI/Ag film was electrosynthesized by CV. Silver electrode was prepared by cyclic voltammetry on stainless steel surface, and then synthesis of polyaniline on silver electrode surface.The corrosion resistance properties and influence was investigated by tafel curves and EIS.Make sure the systhesis conditions of composite films with high density, good corrosion resistance.3、Synthesis the composite films of polyaniline with the transition metal ions(Ni2+).Study the influence of Ni2+ for the electrochemical synthesis of CV.Polymerized the composite films with the best corrosion resistance and make sure the best conditions.4、Polymerized PANI/PPY films by cyclic voltammetry on stainless steel surface and reserach the corrosion resistance.

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CLC: > Mathematical sciences and chemical > Chemistry > Polymer chemistry ( polymer ) > Polymer physics and physical chemistry of polymers > The chemical nature of polymers
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