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Fabrication and Characterization of Several Kinds of Hydrophobic Surface Materials

Author: PeiBen
Tutor: YangWu；GaoJinZhang
School: Northwest Normal University
Course: Analytical Chemistry
Keywords: Micro/nanoscale structure ionic liquid superhydrophobicity
CLC: TB304
Type: Master's thesis
Year: 2011
Downloads: 183
Quote: 0
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Abstract


Wettability is one of the most important properties of the solid surface. Super- hydrophobic surfaces with self-cleaning ability are very important in foundamental research, with many potential applications in wide industrial and agriculture production and everday life. And due to the correlation with a surface tension gradient, wettability control provides a more flexible and efficient way for wide applications such as self-cleanness, tunable optical lenses or discrete liquid droplet manipulators. Although many reports have been focused on their preparation, practical superhydrophobic surfaces are still very rare, which can be dynamically and simutaneously controled by several factor. In this thesis, some superhydrophobic surfaces were constructed by some very simple methods.(1) An double responsive ionic liquid monomer 1-(N- isopropyl -3- propionylamino -)-3- vinylimidazole hexafluorophosphate, to the temperature and to anion exchange, was successful synthesized and characterized by proton nuclear magnetic resonances.(2) Micro/nanoscale composite structural rough surfaces with super hydrophobic properties are prepared with a redox self-assembly by simply immersing them in alcohol solution of 12-hydroxy stearic acid respectively on the iron, zinc and macht metal surfaces and characterized by XPS, contact angle measurement, IR spectra and SEM. The forming mechanism of superhydrophobic films are also discussed. The result shows that static water contact angles on the three films are higher than 160°.(3) Polyethylene has corrosion resistance, electrical insulation (especially high frequency insulation), and is widely used in making corrosion resistant parts and insulation parts and film. In this chapter, hydrophobic surface was fabricated by a simpe solvent volatilization procedure with a low cost on polyethylene plastic substrate.

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