Spinning rod interfacial tensiometer

Details Spinning rod interfacial tensiometer Spinning rod interfacial tensiometer

1986-02-13

1987-02-24

Levy, Stewart J.

Measuring and testing

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

Vapor pressure

G01N 1302

Patent

active

046447822

ABSTRACT:
A transparent cylinder is filled with two liquids of different densities and is sealed at both ends. A rod, having a diameter smaller than the inner diameter of the cylinder is mounted on the longitudinal axis of the cylinder. The filled cylinder is mounted horizontally between two end supports and rotated about the longitudinal axis of the cylinder. The less dense liquid will form around the rod at an appropriate speed, and when steady state equilibrium is achieved by the liquids inside the cylinder, the diameter of the less dense liquid and the rotational speed of the cylinders are measured.

REFERENCES:
patent: 4250741 (1981-02-01), Scriven, II et al.
Fink et al., "Multicell Spinning Drop Interfacial Tensiometer," Rev. Sci. Instrum. 49(2), Feb. 1978, pp. 188-193.
Joseph, Daniel D., Y. Renardy, M. Renardy and K. Nguyen, "Stability of Rigid Motions and Rollers in Bicomponent Flows of Immiscible Liquids," J. Fluid Mech., vol. 153, pp. 151-156 (1985).

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