Journal
PROGRESS IN ORGANIC COATINGS
Volume 125, Issue -, Pages 109-118Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.porgcoat.2018.09.007
Keywords
Brass; Copper; Perfluorinated polydopamine; Film; Superhydrophobicity; Anti-corrosion
Funding
- National Natural Science Foundation of China [51701240]
- Key Research and Development Program of Shandong Province [2017GGX20123]
- Shandong Provincial Natural Science Foundation [ZR2018MEM002]
- Applied Basic Research Program of Qingdao
- Fundamental Research Funds for the Central Universities [16CX05011A, 17CX02063]
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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.
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