Preparation of mussel-inspired perfluorinated polydopamine film on brass substrates: Superhydrophobic and anti-corrosion application

[Display omitted] •Mussel-inspired perfluorinated polydopamine film were prepared on brass.•The corrosion current density distribution of galvanic couple was measured by SVET.•The superhydrophobic samples show excellent anticorrosion behavior in sea water. Inspired by the adhesive properties of prot...

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Bibliographic Details
Published in:Progress in organic coatings 2018-12, Vol.125, p.109-118
Main Authors: Cao, Ning, Miao, Yuanyuan, Zhang, Dalei, Boukherroub, Rabah, Lin, Xueqiang, Ju, Hong, Li, Huiping
Format: Article
Language:English
Subjects:
Anti-corrosion
Aqueous solutions
Brass
Chemical Sciences
Contact angle
Copper
Corrosion
Corrosion currents
Corrosion effects
Corrosion prevention
Corrosion resistance
Dopamine
Fourier transforms
Hydrophobic surfaces
Hydrophobicity
Material chemistry
Mussels
Perfluorinated polydopamine
Photoelectrons
Proteins
Scanning electron microscopy
Spectrum analysis
Substrates
Superhydrophobicity
X ray photoelectron spectroscopy
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Summary:[Display omitted] •Mussel-inspired perfluorinated polydopamine film were prepared on brass.•The corrosion current density distribution of galvanic couple was measured by SVET.•The superhydrophobic samples show excellent anticorrosion behavior in sea water. Inspired by the adhesive properties of protein of mussels, perfluorinated polydopamine (fPDA) film on brass surface was obtained through spontaneous polymerization of dopamine monomer, followed by functionalization with 1H,1H,2H,2H-perfluorodecanethiol (PFDT). Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) spectroscopy, and water contact angle (WCA) measurements revealed the formation of uniform, compact and superhydrophobic film. Electrochemical tests indicated that brass-coated with fPDA possessed a low corrosion current density and high film resistance. The modified sample dipped in 3 wt.% NaCl aqueous solution was well preserved. The results clearly indicate that the remarkable anti-corrosion capability was the result of the synergistic/cooperative effects of the superhydrophobicity and enhanced adhesion of the fPDA film.
ISSN:0300-9440
1873-331X
DOI:10.1016/j.porgcoat.2018.09.007