Superhydrophobic silica coating by dip coating method
| Autor: | Vinayak G. Parale, Satish A. Mahadik, D. B. Mahadik, P. B. Wagh, Satish C. Gupta, Jyoti L. Gurav, Rajiv S. Vhatkara, Mahendra S. Kavale |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
General Physics and Astronomy Nanotechnology Surfaces and Interfaces General Chemistry engineering.material Condensed Matter Physics Dip-coating Superhydrophobic coating Surfaces Coatings and Films Contact angle Coating engineering Gravimetric analysis Thermal stability Wetting Composite material Thermal analysis |
| Zdroj: | Applied Surface Science. 277:67-72 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2013.04.001 |
| Popis: | Herein, we report a simple and low cost method for the fabrication of superhydrophobic coating surface on quartz substrates via sol-gel dip coating method at room temperature. Desired surface chemistry and texture growth for superhydrophobicity developed under double step sol–gel process at room temperature. The resultant superhydrophobic surfaces were characterized by Field-emission scanning electron microscopy (FE-SEM), Atomic force microscopy (AFM), water contact angle (WCA) measurement, differential thermal gravimetric analysis-differential thermal analysis (TGA-DTA) calorimetry and optical spectrometer. Coating shows the ultra high water contact angle about 168 ± 2° and water sliding angle 3 ± 1° and superoleophilic with petroleum oils. This approach allows a simple strategy for the fabrication process of superhydrophilic–superhydrophobic on same surfaces with high thermal stability of superhydrophobicity up to 560 °C. Thus, durability, special wettability and thermal stability of superhydrophobicity expand their application fields. |
| Databáze: | OpenAIRE |
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