Nepenthes Pitcher Inspired Anti-Wetting Silicone Nanofilaments Coatings: Preparation, Unique Anti-Wetting and Self-Cleaning Behaviors

被引：162

作者：

Zhang, Junping ^{[1
]}

Wang, Aiqin ^{[1
]}

Seeger, Stefan ^{[2
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, Ctr Ecomat & Green Chem, Lanzhou 730000, Peoples R China

[2] Univ Zurich Irchel, Phys Chem Inst, CH-8057 Zurich, Switzerland

来源：

ADVANCED FUNCTIONAL MATERIALS | 2014年 / 24卷 / 08期

关键词：

silicone nanofilaments; sliding speed; self-cleaning; surface chemistry; silanes; SUPERHYDROPHOBIC SURFACES; LIQUID; INTERFACES; SLIPPERY; DESIGN; LEGS; ICE;

D O I：

10.1002/adfm.201301481

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nepenthes pitcher inspired anti-wetting coatings, fluoro-SNs/Krytox, are successfully fabricated by the combination of fluoro-silicone nanofilaments (fluoro-SNs) and Krytox liquids, perfluoropolyethers. Fluoro-SNs with different microstructure are grown onto glass slides using trichloromethylsilane by simply repeating the coating step, and then modified with 1H,1H,2H,2H-perfluorodecyltrichlorosilane. Subsequently, the Krytox liquid is spread on the fluoro-SNs coatings via capillary effect. The fluoro-SNs/Krytox coatings feature ultra-low sliding angle for various liquids, excellent stability, and transparency. The sliding speed of liquid drops on the fluoro-SNs/Krytox coating is obviously slower than on the lotus inspired superhydrophobic and superoleophobic coatings, and is controlled by composition of the coating (e.g., morphology of the fluoro-SNs, type of Krytox and its thickness) and properties of the liquid drops (e.g., density and surface tension). In addition, the self-cleaning property of the fluoro-SNs/Krytox coating is closely related to properties of liquid drops and dirt.

引用

页码：1074 / 1080

页数：7

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