Superhydrophobic polyethylcyanoacrylate coatings. Contact area with water measured by Raman spectral images, contact angle and Cassie–Baxter model
| Autor: | M. V. Puydinger dos Santos, E. F. de Souza, Omar Teschke, Luiz Orivaldo Bonugli |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Scanning electron microscope Analytical chemistry Nanowire engineering.material Microstructure Surfaces Coatings and Films Electronic Optical and Magnetic Materials Biomaterials Contact angle symbols.namesake Colloid and Surface Chemistry Coating Polymerization symbols engineering Composite material Contact area Raman spectroscopy |
| Zdroj: | Journal of Colloid and Interface Science. 388:306-312 |
| ISSN: | 0021-9797 |
| DOI: | 10.1016/j.jcis.2012.08.055 |
| Popis: | Apolar fibers wired into a mesh-like microstructure forming a coating with a contact angle larger than 160° and fabricated by polycyanoacrylate polymerization are described. Interconnected fibers with diameters measuring approximately 5 μm are formed by texturized linear or folded nanowires. The structure forming the deposited film occupies ∼1.5% of the coating’s top geometric area. This value agrees with the water/coating contact area given by the Cassie–Baxter contact-angle model (∼1.5%). The spatial distribution of the surface in contact with water was determined by Raman spectral imaging (∼1.5%) using the polycyanoacrylate lines and by scanning electron microscopy (∼2.0%). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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