THE DEVELOPMENT OF THE REHBINDER CONCEPTS OF THE WETTING HYSTERESIS

Experimental data obtained by using new methods for studying the hyste resis phenomena at wetting are reported as the development of Rehbinde r's concepts of wetting hysteresis. It was shown that the surfactant c oncentration near the wetting line, nonuniform surfactant distribution on the wetted surface, viscosity of displaced liquid, and its adhesio n to substrate at displacement welting together with factors known ear lier strongly affect the contact angle hysteresis. It is the measureme nts of advancing and receding angles, i.e., the contact angle hysteres is, which makes it possible to receive the complete information on the regular trends in wetting and physicochemical processes occurring at the interfaces and near the wetting line.