Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Surface tension
Patent
1999-04-27
2000-09-19
Williams, Hezron
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Surface tension
73 6449, G01N 1302
Patent
active
061195111
ABSTRACT:
A method and apparatus is presented for determining surface tension of a liquid or interfacial tension between two dissimilar liquids by using a rigidly suspended probe with small sample sizes and by measuring probe force using a top-loading balance used for supporting the container of liquids under test. When a small sample size in a small container is used, capillary action between a probe and the container walls enhances the measured force, and an adjustment factor for the capillary action must be applied. A probe rigidly suspended to overcome capillary action between the probe and walls permits such measurements. For any sized sample, in accordance with Isaac Newton's third law of equal and opposite forces acting between objects, the force required for lifting a probe vertically from a liquid is equivalent to the reduction in weight of the liquid and container. Force magnitude is thus determined using a top-loading balance for observing weight change, either in the liquid while a suitably configured probe is withdrawn from the liquid or in a probe suspended by a direction converter resting on a top-loading balance while the container and liquid are lowered.
REFERENCES:
patent: 1960224 (1934-05-01), Schoenberg
patent: 3060727 (1962-10-01), Cortiss
patent: 3765227 (1973-10-01), Campbell et al.
patent: 3780569 (1973-12-01), Graham
patent: 4228677 (1980-10-01), Olsson et al.
patent: 4361032 (1982-11-01), Lessnig et al.
patent: 4416148 (1983-11-01), Klus et al.
patent: 4527421 (1985-07-01), Miller
patent: 5305632 (1994-04-01), Sprenger
patent: 5311768 (1994-05-01), Seib et al.
Sherril D. Christian et. al., "Inverted Vertical Pull Surface Tension Method", Langmuir, vol. 14, Nr. 11, pp. 3126-3128. (May 5, 1998).
Lecomte Du Nouy, P., J. Gen Physiol, 1, 521 (1919).
Harkins, W.D. and Jordan, H.F., J. Amer. Chem. Soc., 52, 1751 (1930).
Freud, D.B. and Freud, H.Z., J. Amer. Chem. Soc., 52, 1772 (1930).
Padday, J. F., J. Electroanal. Interfacial Electrochem., 37, 3113 (1972).
Padday, J. F., Pitt, A. R., and Pashley, R. M., J. Chem. Soc. Faraday Trans. 1, 71, 1919 (1974).
Couper, A., in "Physical Methods of Chemistry, 2nd Ed., vol. IXA. Investigations of Surfaces and Interfaces--Part A", (B. W. Rossiter and R. C. Baetzold), p. 1, Wiley-Interscience, New York, 1993.
Adamson, A. W. "Physical Chemistry of Surfaces.", 5th Ed., Wiley-Interscience, New York, 1990.
Zuidema, H. H., and Waters, G. W., Ind. Eng. Chem., 13(5), 312 (1941).
Furlong, D. N., and Hartland, S., Journal of the Chemical Society (United Kingdom) Faraday I, 76, 457 (1980).
Furlong, D. N., and Hartland, S., Journal of the Chemical Society (United Kingdom) Faraday I, 76, 467 (1980).
Christian Sherril D.
Fujio Katsuhiko
Scamehorn John F.
Slagle Andrew R.
Tucker Edwin E.
Harvey James F.
Surface Tensiometry, Inc.
Wiggins J. David
Williams Hezron
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