Corrosion protection of molybdate doped polypyrrole film prepared in succinic acid solution |
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| Authors: | Vu Quoc Trung Trinh Hong Hanh Tran Hong Quang Ha Manh Hung Duong Khanh Linh Hoang Thi Tuyet Lan |
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| Affiliation: | 1. Faculty of Chemistry, Hanoi National University of Education, Hanoi, Vietnamtrungvq@hnue.edu.vn;3. Faculty of Chemistry, Hanoi National University of Education, Hanoi, Vietnam;4. Faculty of General Education, Hanoi University of Mining and Geology, Hanoi, Vietnam;5. Faculty of Basic Sciences, University of Transport and Communications, Hanoi, Vietnam |
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| Abstract: | ABSTRACTPolypyrrole (PPy) was prepared on the mild steel substrate by electrochemical polymerisation in the solution containing pyrrole monomer and succinic acid. The mild steel surface could be passivated before and during electropolymerisation by molybdate. The morphology and structure of the PPy film were studied with SEM. The typical cauliflower structure of PPy was observed. Raman and IR spectroscopy showed that the obtained PPy was in an oxidised state. The thermal stability of PPy was investigated by the thermal gravimetric analysis, showing that PPy was stable at higher than 480°C. The electrochemical property of the PPy film was performed by open circuit potential, polarisation curves (I/E), and electrochemical impedance spectroscopy. The corrosion behaviour of mild steel (CT3) with PPy film in solution NaCl 3% was studied.This paper is part of a supplementary issue from the 17th Asia-Pacific Corrosion Control Conference (APCCC-17). |
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| Keywords: | Polypyrrole succinic acid conducting polymers corrosion protection electrochemical impedance spectroscopy molybdate |
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