title: Nacre-inspired design of mechanical stable coating with underwater superoleophobicity.
abstract: 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.
authors.affiliation: Research Center for Bioengineering and Sensing Technology, University of Science & Technology Beijing, Beijing 100083, PR China.
authors.forename: Li-Ping
authors.initials: LP
authors.lastname: Xu
authors.forename: Jitao
authors.initials: J
authors.lastname: Peng
authors.forename: Yibiao
authors.initials: Y
authors.lastname: Liu
authors.forename: Yongqiang
authors.initials: Y
authors.lastname: Wen
authors.forename: Xueji
authors.initials: X
authors.lastname: Zhang
authors.forename: Lei
authors.initials: L
authors.lastname: Jiang
authors.forename: Shutao
authors.initials: S
authors.lastname: Wang
mesh_terms: D032701:Biomimetics / Q000379:methods*; D057927:Hydrophobic and Hydrophilic Interactions; D007101:Immersion; D055595:Mechanical Phenomena; D060734:Nacre; D036103:Nanotechnology / Q000379:methods*; D011108:Polymers / Q000737:chemistry; D014867:Water
chemical_list: D060734:Nacre; D011108:Polymers; D014867:Water