Hysteresis, entrapment, and wetting angle in mercury porosimetry

摘要: Abstract Intrusion—extrusion hysteresis in mercury porosimetry is shown to be due the extrusion wetting angle differing from intrusion angle. When correct angles are used, second-cycle intrusion—extrusion curves coincident and first-cycle reflect only fact that permanently entrapped. The distribution of entrapped volume as a function pore radius given for two samples. work corresponding entrapment mercury, associated with change angle, determined. These terms were also identified regions on first-and curves.