Abstract
6-(N-Allyl-1,1,2,2-tetrahydroperfluorododecyl)amino-1,3,5-triazine-2,4-dithiol monosodium (ATP) was used to prepare polymeric thin films on pure aluminum plates to achieve a superhydrophobic surface. The electrochemical polymerization process of ATP on aluminum plates in NaNO2 aqueous solution and the formation of poly(6-(N-allyl-1,1,2,2-tetrahydroperfluorododecyl)amino-1,3,5-triazine-2,4-dithiol) (PATP) thin film were studied by means of optical ellipsometry and film weight. The chemical structure of the polymeric film is investigated using FT-IR spectra and X-ray photoelectron spectroscopy (XPS). Contact angle goniometry was applied to measure the contact angles with distilled water drops at ambient temperature. The experimental results indicate that the polymeric film formed on pure aluminum plates exhibits superhydrophobic properties with a distilled water contact angle of 153°. The electrochemical polymerization process is time-saving, inexpensive, environmentally friendly and fairly convenient to carry out. It is expected that this technique will advance the production of superhydrophobic materials with new applications on a large scale. Moreover, this kind of polymeric thin film can be used as a dielectric material due to its insulating features.
Highlights
Due to its low cost, light weight, and high mechanical intensity and easy modeling, aluminum and its alloys have been applied in many fields, such as microphotography, semiconductors, electric devices, optical devices and building materials
In the FT-IR spectrum of aluminum plates coated by polymeric film, the presence of a triazine ring is confirmed by absorption peaks at 1,481, 1,536 and
The sliding angle is 3.8°, implying that the water droplets can be moved upward even when the surface is only slightly tilted. These results indicate that a superhydrophobic surface is generated on the aluminum plate
Summary
Due to its low cost, light weight, and high mechanical intensity and easy modeling, aluminum and its alloys have been applied in many fields, such as microphotography, semiconductors, electric devices, optical devices and building materials. Many methods have been reported for constructing superhydrophobic surfaces These artificial superhydrophobic surfaces have been fabricated mostly by tailoring surface topography and using techniques such as chemical etching [12,13], phase separation [14], L–B film [15], chemical vapor deposition [16], sol–gel processing [17], electrochemical deposition [18], and so on. All these methods are subject to certain limitations, such as tedious fabrication, severe conditions, expensive materials and poor durability, etc. The compound used in our experiment is a kind of organic compound containing hydrophobic -CF2- group and -CF3 terminal groups
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