Wettability Increase by “Corona” Ionization

Experiments showing an increase in the wettability of a hydrophobic surface when using corona air ionization are shown. Photoluminiscence observations support the predictions of charge accumulation at the triple line and confirm previous experiments. In all of the experiments, the contact angle was...

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Bibliographic Details
Published inLangmuir Vol. 27; no. 15; pp. 9614 - 9620
Main Authors Di Virgilio, Vito, Bermejo, Sandra, Castañer, Luis
Format Journal Article Publication
LanguageEnglish
Published Washington, DC American Chemical Society 02.08.2011
Subjects
Chemistry
Electrochemistry: Charge Transfer, Electrocatalysis, Kinetics, Bioelectrochemistry
Enginyeria electrònica
Exact sciences and technology
General and physical chemistry
Humectabilitat
Solid-liquid interface
Surface physical chemistry
Wettabiity
Àrees temàtiques de la UPC
Support
Saturation
Prediction
Air
Contact angle
Hydrophobicity
Solid
Liquid
Wettability
Ionization
Humidity
Surface tension
Physicochemical properties
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Summary:Experiments showing an increase in the wettability of a hydrophobic surface when using corona air ionization are shown. Photoluminiscence observations support the predictions of charge accumulation at the triple line and confirm previous experiments. In all of the experiments, the contact angle was in the saturation regime at a value smaller than that predicted by the condition of a zero value for the solid–liquid surface tension. The PDMS did not show any deterioration due to the corona exposure under the experimental conditions used. The contact angle is shown to increase with humidity.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0743-7463
1520-5827
DOI:10.1021/la2019583