Wettability of Silane-Treated Glass Slides as Determined from X-Ray Photoelectron Spectroscopy

Wettability of Silane-Treated Glass Slides as Determined from X-Ray Photoelectron Spectroscopy

The wettability and stability of silane-treated substrates are central in many processes of industrial and environmental interest. Here, we bring the capability of X-ray photoelectron spectroscopy (XPS) to bear on the wettability evaluation of treated glass. For a suite of silane-treated slides we i...

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Bibliographic Details
Published in:Journal of colloid and interface science Vol. 176; no. 2; pp. 485 - 490
Main Authors: Araujo, Y.Carolina, Toledo, Pedro G., Leon, Vladimir, Gonzalez, Hada Y.
Format: Journal Article
Language:English
Published: San Diego, CA Elsevier Inc 15-12-1995
Elsevier
Subjects:
adhesion
Chemistry
contact angle
Exact sciences and technology
General and physical chemistry
silane
silane-treated glass
Solid-liquid interface
Surface physical chemistry
wettability
X-ray photoelectron spectroscopy (XPS)
silane-treated glass
wettability
contact angle
adhesion
silane
X-ray photoelectron spectroscopy (XPS)
Monolayer
Liquid solid interface
Chemical bond
Glass
X ray spectrometry
Composition effect
Organic silane
Contact angle
Experimental study
Adhesion
Wettability
Carbon content
Adsorption
Surface properties
Photoelectron spectrometry
Modified material
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Summary:The wettability and stability of silane-treated substrates are central in many processes of industrial and environmental interest. Here, we bring the capability of X-ray photoelectron spectroscopy (XPS) to bear on the wettability evaluation of treated glass. For a suite of silane-treated slides we investigate the relationship between wettability and surface composition as determined from XPS. The adhesion behavior and contact angle of mineral oil on brine-covered surfaces are used here as surface wettability indicators. The XPS spectra of silanes and silane-treated glass slides indicate that silicon species of the kind Si–CH exhibit a well-defined binding energy which differs from that of the Si–O species of the glass. The presence of the Si–CH species reveals glass surfaces that have been rendered hydrophobic by chemisorption of organic matter. The surface carbon content as determined from XPS correlates strongly with the equilibrium contact angle, contact angle hysteresis, adhesion behavior, and wettability state. This correlation can be used to rapidly determine the wettability of treated glass.
ISSN:0021-9797
1095-7103
DOI:10.1006/jcis.1995.9942