Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1469954 | Corrosion Science | 2011 | 10 Pages |
With the objective of developing materials with repellent surfaces by combining both low surface energy and rough structure, superhydrophobic fluoropolymer films were prepared via surface graft polymerisation from copper substrates. A vinyl-terminated trimethoxysilane was firstly immobilised on the etched-copper surface to introduce active carbon–carbon double bonds. Subsequent graft polymerisation of 2,2,3,4,4,4-hexafluorobutyl acrylate (HFBA), in the presence of a polymerisation initiator 4,4′-azobis-(4-cyanpentanoic acid), yielded the fluoropolymer films on the copper substrates. The resultant P(HFBA)-grafted surfaces not only exhibited desired superhydrophobic property with water contact angle above 150°, but substantially improved the corrosion resistance of copper substrates.
Graphical abstractThe representative SEM images of (a) etched Cu and (b) Cu-g-P(HFBA)2 surfaces, and the insets are contact angle profiles of water droplet on the corresponding etched Cu and Cu-g-P(HFBA)2 surfaces.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Fabrication of superhydrophobic films on copper via surface graft polymerisation. ► The superhydrophobicity arising from surface compositions and microstructures. ► The substantially-enhanced corrosion resistance of the grafted fluoropolymer films. ► The gradual change of superhydrophobicity with immersion time.