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Fabrication of polydopamine-coated superhydrophobic fabrics for oil/water separation and self-cleaning

机译:用于水/油分离和自清洁的聚多巴胺涂层超疏水织物的制备

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We report a fabric coating method inspired the superhydrophobic properties of lotus leaves and the strong adhesion of the adhesive proteins in mussels. Dopamine, which mimics the single units of the adhesive mussel proteins, was polymerized in an alkaline aqueous solution to coat the surface of fabrics. The versatile reactivity of polydopamine allows subsequent Ag deposition to form a lotus-leaf-like rough structure on the fabric surface. The composite fabric exhibited high water repellence after fluorination. Because dopamine can adhere to all kinds of materials, this method can be applied to many fabrics regardless of their properties and chemical compositions using a universal process. The modified fabrics exhibited excellent anti-wetting and self-cleaning properties with contact angles of >150 degrees and sliding angles lower than 9. The fabrics also efficiently separated oil from oil/water mixtures under various conditions. Our method is versatile and simple compared with other hydrophobic treatment methods, which usually only work on one type of fabric. (C) 2016 Elsevier B.V. All rights reserved.
机译:我们报告了一种织物涂层方法,启发了荷叶的超疏水性能以及贻贝中粘附蛋白的强粘性。模拟粘性贻贝蛋白的单个单元的多巴胺在碱性水溶液中聚合,以覆盖织物表面。聚多巴胺具有广泛的反应性,可以使随后的Ag沉积在织物表面形成荷叶状的粗糙结构。该复合织物在氟化后显示出高的疏水性。由于多巴胺可以粘附到各种材料上,因此可以使用通用方法将该方法应用于许多织物,而不管其性能和化学组成如何。改性织物表现出出色的抗湿和自清洁性能,接触角> 150度,滑动角小于9。在各种条件下,织物还可以有效地从油/水混合物中分离出油。与通常仅对一种类型的织物起作用的其他疏水处理方法相比,我们的方法通用且简单。 (C)2016 Elsevier B.V.保留所有权利。

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