Effect of polystyrenesulphonate and electrolyte concentration for electrical properties of polypyrrole film on aluminium alloy using conductive AFM. (October 2014)

• Record Type: Journal Article
• Authors: Jung, H. S.; Kim, K. S.; Kwak, M. K.; Ko, J. H.
• Is Part Of: Corrosion engineering, science, and technology. Volume 49:Number 7(2014)
• Page Start: 608
• Page End: 613
• Publication Date: 2014-10
• Subjects: Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1179/1743278213Y.0000000140
• Languages: English
• ISSNs: 1478-422X

Abstract

<abstract> <title> <x content-type="archive" xml:space="preserve">Abstract</x> </title> <p>The electrochemical synthesis of polystyrenesulphonate (PSS) doped polypyrrole (PPy) film onto aluminium alloy (AA 2024-T3) under galvanostatic conditions at current densities of 1 mA cm⁻² was studied. In this study, conductive atomic force microscopy (C-AFM) was performed to investigate the electrical properties of PPy film on AA 2024-T3 depending on the concentration of PSS as dopant and nitric acid as electrolyte during electrochemical synthesis. The addition of HNO₃ to aqueous electrolyte solution is found to allow the electrochemical synthesis of well adhering homogeneous PPy film in the presence of PSS on AA 2023-T3. The PPy film in the presence of nitric acid alone can be synthesised, although this film showed the poor quality of the electrical properties of PPy film. According to C-AFM, the study confirmed that the conductivity of PPy film is significantly increased with increasing the PSS, nitric acid concentration and electrochemical deposition time.</p> </abstract>