The contact angle is the angle formed when a drop of liquid meets a solid surface. It is used to characterize the wetting properties of surfaces, by using the Young equation. When the contact angle of a drop in a surface is over 90° the surface is referred as hydrophobic, which refers to poor wetting. When the angle is below 90° the surface is referred as hydrophilic. Contact angle is often used to measure cleanliness, roughness, absorption, surface heterogeneity, among other properties.
The applications of contact angle are extensive, some of them are: Polymers and Plastic, Semiconductors, Nanotechnology, Insecticides, Oil and Petroleum, Mining, Chemicals, Adhesives, Textile and Fibers
This system is suitable for contact angle, surface energy, surface tension, interfacial tension, wetting, roughness, absorption, spreading, cleanliness, surface heterogeneity and characterization applications. The incorporation of the Environmental Chamber allows working at elevated temperatures.