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XUE SHOUQING1,* , LIU QINGHUA1
As polypyrrole (Ppy) has unique doping and dedoping characteristics, the new nano-materials redoped and doped Ppy composites with special anti-corrosive functional groups were successfully prepared by direct oxidation in the stainless steel(SS) surface respectively. The microcomic structure, morphology and anti-corrosive performance of the redoped Ppy were characterized by Cyclic voltammetry(CV), scanning electron microscopy(SEM), Polarization curves(PC) and electrochemical impedance spectroscopy (EIS), and compared with a doped and undoped Ppy, and their anti-corrosion mechanism were investigated theoretically. The results show that, the stainless steel surface covered with redoped and doped Ppy composites had good anti-corrosive performance, the redoped Ppy composites had the best. The corrosion potential of the redoped Ppy composite was increased by about 0.989V and the corrosion current is reduced by about 2 orders of magnitude to pure Ppy. The dense membrane structure of the redoped Ppy significantly increased, membrane defects significantly reduced, the best corrosion resistance, so it has a better anti-corrosion behavior..
Redoped, Zinc phosphate, anti-corrosive performance, Ppy.
XUE SHOUQING, LIU QINGHUA, Preparation and anti-corrosive performance of polypyrrole composites redoped with zinc phosphate, Optoelectronics and Advanced Materials - Rapid Communications, 9, 11-12, November-December 2015, pp.1483-1486 (2015).
Submitted at: Sept. 3, 2015
Accepted at: Oct. 28, 2015
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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