The Superhydrophobic Fluorine‐Containing Material Prepared Through Biomimetic UV Lithography for Oil–Water Separation and Anti‐Bioadhesion

Abstract

AbstractA series of fluorine‐containing UV‐curable prepolymers is synthesized to prepare fluorine‐containing lotus‐like biomimetic films through UV nanoimprint lithography technique. Because of the combination of low‐surface energy fluorine element and micro‐nano biomimetic structure, the UV‐cured films exhibit excellent superhydrophobicity and the maximum water contact angle of 172° is obtained. The prepared biomimetic superhydrophobic film is still robust even under dynamic condition; during the water dropping test, the water droplet can bounce ≈10 mm from the surface after dropping from a height of 25 mm. In addition, due to the excellent superhydrophobicity and superoleophilicity, the oil can spread rapidly after dropping on the obtained superhydrophobic surface and then highly efficient high oil–water separation ability can be achieved, which provides for high potential application on oil–water separation membranes. Furthermore, the biomimetic superhydrophobic films also show obvious anti‐bioadhesion, the adhered cell number on fluorine‐containing biomimetic surface is just ≈9% (the minimum value) of that on non‐fluorine non‐biomimetic surface.