Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Advanced Coatings Research Center of Ministry of Education of China, Fudan University , Shanghai 200433, China.
ACS Nano. 2017 Aug 22;11(8):8265-8272. doi: 10.1021/acsnano.7b03433. Epub 2017 Jul 28.
Hydro- and oleophobic (namely, omniphobic) coatings or surfaces have many important applications, but tremendous challenges in fabrication aspects still remain. Herein, we report a bioinspired design and nanofabrication of three-dimensional (3D) tribrachia-post arrays with re-entrant geometry (3D TPARG) for superhydrophobic and oleophobic polymer films or surfaces. By simply controlling the temperatures and time to treat silica colloidal templates, we can readily fabricate 3D ordered polymer arrays of tribrachia-posts or hexagonal tribrachia-posts with re-entrant geometries that resemble the skin of a springtail insect after the template is removed. These polymer surfaces exhibit excellent and self-healing superhydrophobicity and oleophobicity even against temperature, acids, alkalis, and mechanical damage. Moreover, their liquid-infused nanostructured surfaces still display very good liquid-sliding ability for water and oils. Our 3D TPARG design strategy may help the development of omniphobic polymer coatings or surfaces for practical applications in self-cleaning surfaces, liquid transport, antifouling materials, and many other important fields.
水油双疏（即全疏）涂层或表面有许多重要的应用，但在制造方面仍存在巨大的挑战。在此，我们报告了一种受生物启发的设计和制造具有复曲面结构的三维（3D）三叉支柱阵列（3D TPARG）的方法，用于制备超疏水和超疏油的聚合物薄膜或表面。通过简单地控制温度和处理二氧化硅胶体模板的时间，我们可以很容易地制备出具有复曲面结构的 3D 有序三叉支柱聚合物阵列或六方三叉支柱聚合物阵列，其表面形貌类似于去除模板后的跳虫昆虫的皮肤。这些聚合物表面表现出优异的自修复超疏水性和超疏油性，甚至可以抵抗温度、酸、碱和机械损伤。此外，它们的液体注入纳米结构化表面仍然对水和油具有非常好的液体滑动能力。我们的 3D TPARG 设计策略可能有助于开发用于自清洁表面、液体输送、防污材料和许多其他重要领域的全疏聚合物涂层或表面的应用。
