Grafting of PMMA brushes layer on Cu surface to create a stable superhydrophobic surface

Degrafting of Polymer Brushes by Exposure to Humid Air

“…31 PMMA brushes provide a stable coating when fully immersed in water for long periods of time. 32 Hence, it was to be expected that in an environment with a reduced water content, detachment reactions would not occur because of the minimal accessibility of water molecules to the cleavable groups. PHEMA brushes can reach swelling ratios of up to 5 when fully immersed in water.…”

“…Even when completely immersed in liquid, it has a water absorption of only 2 wt % . PMMA brushes provide a stable coating when fully immersed in water for long periods of time . Hence, it was to be expected that in an environment with a reduced water content, detachment reactions would not occur because of the minimal accessibility of water molecules to the cleavable groups.…”

Controlled Growth of Ultra‐Thick Polymer Brushes via Surface‐Initiated Atom Transfer Radical Polymerization with Active Polymers as Initiators

“…The thickness of polymer brushes grafted from surfaces is determined by the grafting density (i.e., the average number of surface‐tethered polymer chains per unit surface area) and the molecular weight of the surface‐grafted polymers . Polymer brushes can be prepared by either “grafting to” or “grafting from” strategies. “Grafting from” is generally the preferred strategy as it leads to well‐defined brushes with higher grafting densities than those obtained by “grafting to” strategy .…”

Applicable Superamphiphobic Ni/Cu Surface with High Liquid Repellency Enabled by the Electrochemical-Deposited Dual-Scale Structure

“…First, Cu cones with average height of 4 μm and root diameter of 800 nm were uniformly deposited on a flat Cu sheet via chemical plating (Figure 1b). 19 It is measured that the gaps between adjacent cone structures are ranged from 1 to 3 μm. From the enlarged scanning electron microscopy (SEM) image, rough side surface and extremely sharp tips of Cu cones are clearly observed (Figure 1c).…”

“…Compared with Cu cone surface, the dual-scale structured Ni/Cu surface with larger real surface area sees a less erodible trend, owing to the coverage of nickel material with superior anticorrosive property. 19 After modification with PFOTS, the surface delivers an enhanced corrosion resistance. Two factors are accountable for the improvement.…”