Highly compressible and stretchable superhydrophobic coating inspired by bio-adhesion of marine mussels

Abstract

A highly compressible and stretchable superhydrophobic coating was fabricated using layer-by-layer deposition of Ag nanoparticles and polydopamine.

Magnetic, Durable, and Superhydrophobic Polyurethane@Fe3O4@SiO2@Fluoropolymer Sponges for Selective Oil Absorption and Oil/Water Separation

“…8,[26][27][28][29][30][31][32] However, PU sponges absorb water and oil simultaneously, which makes them impractical to be used directly for selective removal of oils from water. Therefore, researchers have tried various methods, e.g., increasing the surface roughness and decreasing the surface tension, to prepare superhydrophobic PU sponges for efficient oil/water separation.…”

Highly Stretchable Superhydrophobic Composite Coating Based on Self‐Adaptive Deformation of Hierarchical Structures

“…Thus, enhancing the mechanical stability of the surface structures is critical for practical application of the superhydrophobic surface . Currently, the basic strategy to resolve the above issue is decreasing the deformation degree of roughness against external force by improving the mechanical strength of the surface structures, such as introducing microscale pillars, increasing chemical cross‐linking sites in coating components, and improving the adhesion between coating and substrates . But these methods to restrict the deformation of surface structure can only be applied to the rigid substrates or flexible substrates with low deformation ability.…”

“…Recently, with the rapid development of stretchable electronics, functional textiles, and flexible sensors, water‐proof protection materials are needed to be built on various flexible substrates with highly deformable ability . Nevertheless, the micro‐nanostructures on the surface change significantly when the superhydrophobic coating on the flexible substrates suffers a large mechanical deformation (strain >50%) such as stretching and compression . The obvious structure change can lead to the Cassie–Wenzel transition or the loss of superhydrophobic characteristics for the coating .…”

“…Thus, it is still a big challenge to maintain the antiwetting property of superhydrophobic surface under large deformation. Until now, only limited success has been achieved in the fabrication of highly stretchable superhydrophobic surfaces, which can withstand a stretching strain from 70% to 300% . Besides, their fabrication process often involves complicated multistep treatments and the use of expensive fluorinated compounds.…”

Fabrication of Superhydrophobic Surface on Polydopamine‐coated Al Plate by Using Modified SiO2 Nanoparticles/Polystyrene Nano‐Composite Coating

“…The adhesive protein contains high 3,4‐dihydroxyphenyl alanine (DOPA) content. Therefore, the polymerization of DOPA was carried out under alkaline aqueous conditions and found to be an excellent method for coating plates of various materials for diverse applications …”