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Related to Contact angle: surface tension

wettability (wet´əbil´ətē),

n the angle at which a droplet of liquid interfaces with a horizontal surface; the shape of the droplet varies depending on the type of liquid and surface, thereby influencing the contact angle and thus the wettability. The greater the angle past 90°, the greater the wettability.
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The suspected reason for the decreased contact angle was increased oxygen content at the surface of the Company D coating from process termination by venting to atmosphere, where oxygen terminates free radicals of the Parylene polymer chain and leaves an oxygenated functional group, such as hydroxyl (-OH), that decreases contact angle, increases hydrophilicity, and decreases hydrophobicity.
NanoPhos tested the final panels for their water and oil repellency properties through contact angle measurements and visual inspection.
Our results showed that polymer concentration influenced porosity and contact angle to some degree, the results were depicted in Fig.
Contact angle of the grafted film revealed a decreased of surface wettability which means the films have a hydrophobic surfaces.
Regardless, the fatty acid chain provides a hydrophobic envelope for the bagasse architecture, the increasing of contact angle of water droplet by the grafting demonstrates this envelope.
1[degrees] while the treadmill speed remained constant, the initial contact of the hand with the pushrim was found to move slightly forward, while the total contact angle was initially decreased and remained stable for slopes equal to or greater than 3.
The higher amine content of the high charge ELP/ELP-PA surface made a more hydrophilic and resulted in a lower water contact angle than that of the low charge ELP/ELP-PA blend.
The contact angles of drops formed on the surface of microscope slides were used to further assess surface characteristics, (12) with smaller contact angles indicating greater hydrophilicity and larger contact angles indicating greater hydrophobicity (Figure 2).
11), (12) A surface with water contact angle higher than 150[degrees] and sliding angle lower than 10[degrees] is usually defined as a superhydrophobic surface.
Contact angle measurements are often used to indicate clay wettability and interfacial tension (Rogers et al.
When the researchers applied several layers of the coating on the fabric, the contact angle (a measure of water-repellence) was about 154 degrees, making it even more repellent than car wax (90-degree contact angle), Teflon (95-degree contact angle) or products that repel rainwater from car windshields (110-degree contact angle).