Chemical grafting of the superhydrophobic surface on copper with hierarchical microstructure and its formation mechanism

Superhydrophobic Polypropylene Surfaces Prepared with TiO2 Nanoparticles Functionalized by Dendritic Polymers

“…There are important antecedents of modified surfaces of other materials with superhydrophobic properties that showed WCA and CAH similar to those found by us in these hybrid surfaces. For example, steel sheet by the chemical etching and oxidation processes were obtained with WCA and CAH about 166 degrees and less than 2 degrees, respectively; Cu surfaces grafted of poly(methyl methacrylate) (PMMA) showed WCA of 165.2 degrees; superhydrophobic Ni‐Cu‐TiO 2 nanocomposite surfaces on the copper substrate was developed by electrodeposited coatings by myristic acid‐ethanol solution with WCA of 161 degrees and the lowest CAH of 3 degrees . In our previous published work, superhydrophobic nanocomposite coatings on injection‐molded polypropylene (PP) samples were prepared by dipping in xylene solvent containing different concentrations of titanium dioxide nanoparticles (NPs) functionalized with trimethoxypropyl silane.…”

“…Two important models for describing the wettability behavior of a rough surface were presented by Wenzel and by Cassie and Baxter, which are commonly used to explain the effect of roughness on the apparent contact angle of a liquid droplet on a solid surface. In many cases, the fabrication of artificial hierarchical micro‐nano structures is obtained by selecting a specific surface's modification processes in order to control both the chemical composition and the surface morphology …”

Thermal Oxidation Fabricated Copper Oxide Nanotip Arrays with Tunable Wettability and Robust Stability: Implications for Microfluidic Devices and Oil/Water Separation

“…After that, the Cu substrates were activated in PdCl 2 for 90 s. Then, the pretreated copper sheets were put into the bath (65 °C) for 20 min to chemically deposit Cu nanotip arrays (Cu NAs). 23 The solution was composed of CuSO 4…”

A Durable PVDF/PFOTES-SiO2 Superhydrophobic Coating on AZ31B Mg Alloy with Enhanced Abrasion Resistance Performance and Anti-Corrosion Properties

“…Although the majority of the surface area retain the film after 168 h of salt spray corrosion, it can be seen that there are obvious bubblin on the surface. Although numerous studies have shown that superhydrophobic coating can improve the corrosion resistance of metals [33,34], the durability of corrosion re sistance during actual use is closely related to the adhesion between the superhydropho However, it can be found from Figure 9a that the anode polarization curve does not show a broad Tafel area, and the anode curve has an active/passive transition, which may be the existence of the dissolution reaction and the initiation of the passivation reaction did not lead to a clear experimental anode Tafel area [31]. Compared with the polarization curve of bare AZ31B Mg alloy, the polarization curve of superhydrophobic coating (Figure 9b) is quite different.…”

“…Although the majority of the surface area retains the film after 168 h of salt spray corrosion, it can be seen that there are obvious bubbling on the surface. Although numerous studies have shown that superhydrophobic coatings can improve the corrosion resistance of metals [33,34], the durability of corrosion resistance during actual use is closely related to the adhesion between the superhydrophobic coating and the substrate [35]. A continuous neutral salt spray test was performed in a salt spray test box following the ASTM B117 standard.…”