Nacre-Inspired Design of Mechanical Stable Coating with Underwater Superoleophobicity
Nacre-Inspired Design of Mechanical Stable Coating with Underwater Superoleophobicity
复制标题
具有水下超疏油性的机械稳定涂层的受珍珠母启发的设计
DOI：
10.1021/nn400650f
复制
发表时间：
2013-06-01
期刊：
影响因子：
17.1
通讯作者：
Wang, Shutao
中科院分区：
文献类型：
--
作者：
Xu, Li-Ping;Peng, Jitao;Wang, Shutao
由于海洋环境中溢油事故的频繁发生，对海水下稳定的超疏油涂料提出了更高的要求。目前，水下超疏油表面经常遭受机械损伤，并逐渐失去其超疏油性能。在实际应用中，如何制备一种能承受恶劣条件的稳定、坚固的水下超疏油薄膜仍然是一个挑战。珍珠层是目前研究最广泛的刚性生物材料之一。受贝壳珍珠层优异的力学性能和水下超疏油表面的启发，我们基于具有高表面能的构件，采用典型的逐层(LBL)方法制备了聚电解质/粘土杂化薄膜。将贝壳珍珠层的“砖-泥”结构概念性地复制到所制备的薄膜中，使所获得的薄膜具有优异的力学性能和极高的耐磨性。此外，所制备的薄膜还具有稳定的水下超疏油性能，低油附着力，以及在人工海水中优异的环境耐久性。我们期待这项工作将为设计具有优异机械性能和更好稳定性的水下低油膜提供一种新的方法，并可能推动其在海洋防污和微流控装置中的实际应用。
Because of the frequent oil spill accidents in marine environment, stable superoleophobic coatings under seawater are highly desired. Current underwater superoleophobic surfaces often suffer from mechanical damages and lose their superoleophobicity gradually. It remains a challenge to fabricate a stable and robust underwater superoleophobic film which can endure harsh conditions in practical application. Nacre is one of most extensively studied rigid biological materials. Inspired by the outstanding mechanical property of seashell nacre and those underwater superoleophobic surfaces from nature, we fabricated a polyelectrolyte/clay hybrid film via typical layer-by-layer (LBL) method based on building blocks with high surface energy. 'Bricks-and-mortar' structure of seashell nacre was conceptually replicated into the prepared film, which endows the obtained film with excellent mechanical property and great abrasion resistance. In addtion, the prepared film also exhibits stable underwater superoleophobicity, low oil adhesion, and outstanding environment durability in artificial seawater. We anticipate that this work will provide a new method to design underwater low-oil-adhesion film with excellent mechanical property and improved stability, which may advance the practical applications in marine antifouling and microfluidic devices.