Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Vapor pressure
Patent
1979-10-01
1981-06-30
Goldberg, Gerald
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Vapor pressure
G01N 1302
Patent
active
042755875
ABSTRACT:
A method of measuring the dynamic wetting angle between a liquid and a solid surface moving into the liquid as a function of the speed of the solid surface relative to the liquid comprising the steps of moving the solid surface into the liquid at a constant speed, adjusting the angle of the surface entering the liquid until the wetting angle is equal to the angle between the solid surface and the quiescent surface of the surrounding liquid, and measuring said adjusted angle. In another embodiment, the speed of the solid surface entering at a selected angle is adjusted until the meniscus adjacent the surface becomes level, and the speed is measured.
REFERENCES:
Fowkes, F. M., et al. The State of Monolayers Adsorbed at the Interface Solid-Aqueus Solution, 62 J.A.C.S., pp. 3377-3386, 1940.
Ablett, R. An Investigation of the Angle of Contact between Paraffin Wax & Water, 26 Philos. Mag., pp. 244-267, 1923.
Wilkinson, W. L., Entrainment of Air by a Solid Surface Entering a Liquid/Air Interface, Chem. Eng. Sci. vol. 30, pp. 1227-1230, 1975.
Inverarity, G. Dynamic Wetting of Glass Fibre & Polymer Fibre, Brit. Polymer Jour. vol. 1, pp. 245-251, Nov. 1969.
Kennedy, B. S., et al, Dynamic Fluid Interface Displacement and Prediction of Air Entrainment, Journ. of Coll. & Interface Sci. 62(1): pp. 48-62, Oct., 1977.
Dyba, R. V. et al, Dynamic Measurements of the Wetting of Single Filaments, Textile Res. Journ. 40(10): pp. 884-890, Oct., 1970.
Ericson John W.
Goldberg Gerald
Polaroid Corporation
Roskos Joseph W.
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