Quantification and physics of cold plasma treatment of organic liquid surfaces
| Autor: | Hadas Aharoni, Gilad Chaniel, Roman Pogreb, Roman Grynyov, Yakir Nagar, Evgeny Shulzinger, Victor Multanen, Edward Bormashenko |
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| Rok vydání: | 2018 |
| Předmět: |
Polydimethylsiloxane
FOS: Physical sciences Plasma treatment 02 engineering and technology Condensed Matter - Soft Condensed Matter 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences lcsh:QC1-999 Surface energy Silicone oil 0104 chemical sciences Contact angle chemistry.chemical_compound Silicone chemistry Chemical engineering Castor oil medicine Soft Condensed Matter (cond-mat.soft) Electret 0210 nano-technology lcsh:Physics medicine.drug |
| Zdroj: | Vìsnik Harkìvsʹkogo nacìonalʹnogo unìversitetu ìmenì V.N. Karazìna. Serìâ: fìzika., Iss 28 (2018) |
| ISSN: | 2073-3771 2222-5617 |
| DOI: | 10.26565/2222-5617-2018-28-2 |
| Popis: | Plasma treatment increases the surface energy of condensed phases: solids and liquids. Two independent methods of the quantification of the influence imposed by a cold radiofrequency air plasma treatment on the surface properties of silicone oils (polydimethylsiloxane) of various molecular masses and castor oil are introduced. Under the first method the water droplet coated by oils was exposed to the cold air radiofrequency plasma, resulting in an increase of oil/air surface energy. An expression relating the oil/air surface energy to the apparent contact angle of the water droplet coated with oil was derived. The apparent contact angle was established experimentally. Calculation of the oil/air surface energy and spreading parameter was carried out for the various plasma-treated silicone and castor oils. The second method is based on the measurement of the electret response of the plasma-treated liquids. 15 pages, 6 figures, 3 tables |
| Databáze: | OpenAIRE |
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