Method for determining liquid/liquid interfacial tension and dyn

Details Method for determining liquid/liquid interfacial tension and dyn Method for determining liquid/liquid interfacial tension and dyn

1992-07-31

1993-12-14

Housel, James C.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Surface tension

73 6448, G01N 1302

Patent

active

052691764

ABSTRACT:
A method is disclosed for providing data useful in evaluating the dynamics of surfactants used to reduce interfacial tension in a system having two immiscible liquids and one or more surfactants. The method involves rapidly growing a drop of a first liquid in the second liquid, but stopping the flow of the first liquid at some point before the drop detaches. The time it takes for the drop to form and detach is then measured. This process is repeated for different volume drops. The drop lifetimes can then be plotted against drop volumes, resulting in a curve which is related to the diffusional coefficient and concentration for the surfactant in the particular liquid/liquid system.

REFERENCES:
patent: 3913385 (1975-10-01), Jobe
patent: 4646562 (1987-03-01), Cronan
patent: 4697451 (1987-10-01), Matteson

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