Colorful Superamphiphobic Coatings with Low Sliding Angles and High Durability Based on Natural Nanorods

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• 作者：Jie Dong ; Qin Wang ; Yujie Zhang ; Zhaoqi Zhu ; Xianghong Xu ; Junping ZhangAiqin Wang
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2017
• 出版时间：January 18, 2017
• 年：2017
• 卷：9
• 期：2
• 页码：1941-1952
• 全文大小：828K
• ISSN：1944-8252

文摘

Superamphiphobic coatings with low sliding angles (SAs) and high durability are very attractive in academic and industrial areas but are very challenging to invent. Here, inspired by Maya Blue, we report for the first time colorful superamphiphobic coatings with low SAs and high durability by the combination of natural palygorskite (PAL) nanorods and organosilanes. The coatings were characterized using a wide range of electron microscopy and other analytical techniques. Different from the previously reported methods, the micro/nanostructure of the superamphiphobic coatings were constructed by using the abundant natural PAL nanorods as the building blocks. Superamphiphobicity of the coatings depends on surface morphology and chemical composition of the coatings, which can be regulated by the concentrations of PAL and organosilanes. The colorful superamphiphobic coatings feature high contact angles and low SAs for various liquids, including water and n-decane. The coatings also showed high mechanical, environmental, chemical, and thermal durability even under harsh conditions. Moreover, the coatings in different colors with comparable superamphiphobicity and durability can be prepared using different cationic dyes applied onto various substrates via the same approach. The colorful superamphiphobic coatings with low SAs and high durability may be useful in various fields, e.g., anticreeping of oils and restoration of cultural relics.