Abstract
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.
| Original language | English |
|---|---|
| Title of host publication | OPTIMIZATION OF THE COMPOSITION, STRUCTURE AND PROPERTIES OF METALS, OXIDES, COMPOSITES, NANO AND AMORPHOUS MATERIALS |
| Editors | M Zinigrad, L Leontiev |
| Place of Publication | Ramat HaGolan St 65, Ariel, ISRAEL |
| Pages | 1-13 |
| Number of pages | 13 |
| State | Published - 2015 |
Keywords
- change in the surface energy
- cold plasma
- electret
- hydrophilization
- silicone oils
- spreading parameter