Quantification and physics of cold plasma treatment of organic liquid surfaces

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 plasmatreated silicone and castor oils.The second method is based on the measurement of the electret response of the plasma-treated liquids.Keywords: cold plasma,

Abstract licence: CC BY

8 more references, whose wording the paper’s licence keeps private.

A person counts once a day per paper. We keep no cookie and no address: a reader is a hash that changes every day. Any month under five reads shows no number.