I'm looking for methods to find the interface energy between liquids and solid?
Dear Dr. Mohammadali Ahmadzadeh,
the interaction of a liquid with a solid is characterized by the word ‘Wetting’. This phenomenon can help to characterize a surface, and to determine the interaction, between a solid and a liquid. The intermolecular bonds or cohesive forces between the molecules of a liquid cause surface tension. When the liquid encounters another substance, there is usually an attraction between the two materials. The adhesive forces between the liquid and the second substance will compete against the cohesive forces of the liquid. Liquids with weak cohesive bonds and a strong attraction to another material (or the desire to create adhesive bonds) will tend to spread over the material. Liquids with strong cohesive bonds and weaker adhesive forces will tend to bead-up or form a droplet when in contact with another material.
One way to quantify a liquid's surface wetting characteristics is to measure the contact angle of a drop of liquid placed on the surface of an object. The contact angle is the angle formed by the solid/liquid interface and the liquid/vapor interface measured from the side of the liquid. Liquids wet surfaces when the contact angle is less than 90°. For a penetrant material to be effective, the contact angle should be as small as possible. In fact, the contact angle for most liquid penetrants is very close to 0°.
For more details, please see the source:
Interface Science and Composites by Soo-Jin Park, Min-Kang Seo, in Interface Science and Technology (2011)
I suggest you to have a look also at the following, interesting papers:
-Measuring solid–liquid interfacial energy fields: diffusion-limited patterns
Martin E. Glicksman, Kumar Ankit
Journal of Materials Science volume 53, pages10955–10978(2018)
Available at: https://link.springer.com/article/10.1007/s10853-018-2356-7
-Estimation of solid–liquid interfacial tension using curved surface of a soft solid
Subrata Mondal, Monmee Phukan, and Animangsu Ghatak
PNAS, 112 (41) 12563-12568 (2015)
Available at: https://www.pnas.org/content/112/41/12563
-A fundamental approach for the measurement ofsolid-liquid interfacial energy
Atsushi Fukuda et al.
J. Phys.: Conf. Ser.165 012079 (2009) – Open Access
Available at: https://iopscience.iop.org/article/10.1088/1742-6596/165/1/012079/pdf
Best regards, Pierluigi Traverso
Pierluigi Traverso
Dear Dr.pierluigi Traverso , thanks so much for you'r guide and I wish the best for you.
Dear Mohammadali,
the relation between the different surface energy terms 'sigma' is described by Youngs equation:
cos teta = (sigma SG - sigma LS)/sigma LG
Here, teta is the so called contact angle which describes the angle of a liquid with a solid whereas wetting the surface. This value can be found or measured and depends on temperature and the surface quality. Only very pure surfaces give the value for the solid. Sigma LG describes the surface tension of the pure liquid. ( example: surface tension or surface energy of water near room temperature: 73 mN/m or 73 mJ/m² - here purity and temperature have a high influence). The surface energy of the solid sigmaSG is difficult to measure but can be estimated theoretically. A table (from Wikipedia) I added. The value from which I assume you want to know, is sigmaLS.
So you see, to get that information, you want to know, is very complex.
With Regards
R. Mitdank
Rüdiger Mitdank
Dear Rudiger
Thanks for you'r guide and help .
with Regards
M.A.Ahmadzadeh
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