This chapter is devoted to describing various methods to measure surface and interfacial tensions of liquids and measurements of contact angles at the solid/liquid interface, with applications to smooth plane surfaces, powdered solids, and solid fibers. The Washburn equation is derived to describe the rate of penetration of a porous solid by a liquid.
Key Words: capillary height, drop weight, Du Noüy ring, goniometer,
immersion, Langmuir balance, pendent drop, sessile drop, spinning drop,
vibrating jet, Wilhelmy plate
| text book | other
resources | home