A 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.

中文翻译：

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仿生紫外光刻法制备用于油水分离和抗生物粘附的超疏水含氟材料

通过紫外纳米压印光刻技术合成了一系列含氟紫外光固化预聚物，制备了含氟类莲花仿生薄膜。由于低表面能氟元素和微纳米仿生结构的结合，UV固化薄膜表现出优异的超疏水性，最大水接触角为172°。所制备的仿生超疏水薄膜即使在动态条件下也依然坚固；在滴水测试中，水滴从 25 毫米的高度滴下后，可以从表面反弹约 10 毫米。此外，由于具有优异的超疏水性和超亲油性，油滴在获得的超疏水表面后可以迅速扩散，从而实现高效的高油水分离能力，这为油水分离膜提供了高潜力的应用。此外，仿生超疏水膜还表现出明显的抗生物粘附性，含氟仿生表面的粘附细胞数仅为非氟非仿生表面的≈9%（最小值）。