Abstract
The wettability of solid surface is a very important property of materials, which depends on both surface chemical composition and the geometry of the solid surface. We herein report a simple and inexpensive method to fabricate superhydrophobic surfaces with the use of mullite whisks (MWs) for the first time. Binary micro-/nano-structural surfaces were created by the incorporation of hydrophilic needlelike MWs with poly(γ-methacryloxypropyltrimethoxysilane) to exhibit hydrophobic behavior, which further showed superhydrophobicity with water contact angle of 152.4±2∘ after modified with stearic acid. The wettability variation from hydrophilicity to hydrophobicity and superhydrophobicity during the assembly process are discussed based on the scanning electron microscopy, X-ray diffraction, thermogravimetric analysis, and contact-angle system. The superhydrophobicity of the surface could be attributed to the hierarchical microstructure of the rough surface induced by MWs and low surface energy of stearic acid.
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Acknowledgements
This work was supported by the National High Technology Research and Development Program of China (863 Program) (2012AA030313), National Natural Science Foundation of China (21076103), and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).
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Deng, Z., Yin, Y., Yang, S. et al. Fabrication of superhydrophobic surface from binary micro-/nano-structure of mullite-whisk-based films. Appl. Phys. A 113, 591–596 (2013). https://doi.org/10.1007/s00339-013-7661-z
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DOI: https://doi.org/10.1007/s00339-013-7661-z