Journal
APPLIED SURFACE SCIENCE
Volume 349, Issue -, Pages 516-523Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2015.05.017
Keywords
Superhydrophobic surface; Adhesion controllable; Micro-droplet reactor
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Funding
- National Natural Science Foundation of China [51103120]
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In this paper, a simple method for fabricating tunable adhesion superhydrophobic surface based on heterogeneous chemical composition was reported. By simply changing the ratio of HOOC(CH2)(8)COOH in the mixed modification solution, the slide angles (SA) of water droplet can be adjusted from extremely low (less than 10 degrees) to very high (180 degrees). Besides, the influence of surface chemical composition on the surface adhesion was also examined. Noticeably, the anti-corrosion performance of magnesium alloy was greatly improved after being modified. In addition, the tunable adhesion superhydrophobic magnesium alloy showed high hydrophobicity not only for pure water but also for corrosive liquids, such as acid, alkali, salt, cola, milk and coffee. Based on the great anti-corrosion performance and continuous adhesion, a proof of droplet-based microreactor and selective transportation of waters with different volume was provided. This study provides a new method for preparation of superhydrophobic surfaces with tunable adhesion, which not only offers the further principle for the fabrication of tunable adhesive superhydrophobic surfaces, but also can be potentially used in many important applications, such as micro-fluidic devices and chemical microreactors. (C) 2015 Elsevier B.V. All rights reserved.
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