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Corrosion resistance mechanism of itaconic acid doped polyaniline /nano-graphene oxide composite coating.

08:00 EDT 23rd March 2020 | BioPortfolio

Summary of "Corrosion resistance mechanism of itaconic acid doped polyaniline /nano-graphene oxide composite coating."

Graphene Oxide (GO) and polyaniline (PANI) are very unique material with a broad potential in corrosion protection coating. To achieve maximum stability and anti-corrosion effect in polar medium, firstly itaconic acid doped PANI (DP) was readily prepared by one-step method, followed by forming GO and DP composite (GODP). Characterization by Fourier Transform Infrared Spectroscopy (FTIR) and UV-vis absorption spectra (UV-vis) provides evidence for the successful doping of itaconic acid in PANI. X-ray diffraction (XRD) analysis shows that the d-spacing of the GO sheets increases slightly with the intercalation of DP. The morphological studies show disordered structures in GODP compared with original GO sheets due to the introduction of PANI molecules and the interaction of functional groups on the surface of GO sheets. Thermogravimetric analysis (TGA) reveals good thermal stability of DP and GODP. Quantum calculation further confirms the successful doping of itaconic acid, and the effective complex of GO and DP, providing a quantitative understanding for the curing mechanism. The crosslinking interaction among GODP, curing agent, and epoxy resin facilitates the formation of compact coating, leading to excellent corrosion resistance towards Mg alloy.

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Name: Nanotechnology
ISSN: 1361-6528
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