Wetting kinetics measurement of plane ceramic membrane

Through the measurements of the intrapore liquid penetration velocity of the ceramic membrane, the wetting properties of A1₂O₃, ZrO₂, TiO₂ and a composite membrane were investigated and compared. The wetting kinetics curve was divided into five stages, and the slope of the linear stage was used for calculation of the membrane material constant and wetting contact angle. Using water as reference agent the material constants for the four kinds of plane ceramic membrane were obtained. The relative wetting contact angles of isobutanol and toluene were calculated by the modified Washburn equation. The results show that wetting properties of the four kinds of ceramic materials are similar. All the four kinds of membranes are strongly hydrophilic and fit for preparation of O/W emulsion.