Abstract
Exact solutions for the torsional interfacial viscometer with oscillatory motion are obtained. A sinusoidal oscillation is imposed upon the angular velocity of the dish. The bob is induced to oscillate with the same frequency as that of the dish. From measurements of the amplitude ratio and phase angle between these two oscillations, the surface shear viscosity can be determined. The analysis is confirmed by experimental measurement. The effects of various operational and instrumental variables upon the response of the bob are discussed. Typical behavior of the phase interface between the liquid-liquid adjoining phases is presented. The theoretical results suggest that the torsional interfacial viscometer with oscillatory motion is a viable instrument for measuring a wide spectrum of interfacial shear viscosity. The apparatus is schematically described. Experiments with the interface between air and an aqueous solution of sodium dodecyl sulfate and dodecyl alcohol are carried out and the results are analyzed by the developed theory.
| Original language | English |
|---|---|
| Pages (from-to) | 81-99 |
| Number of pages | 19 |
| Journal | Journal of Colloid And Interface Science |
| Volume | 119 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1987 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Biomaterials
- Surfaces, Coatings and Films
- Colloid and Surface Chemistry
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Oscillatory torsional interfacial viscometer. / Ray, Yia Ching; Lee, Hae Ok; Jiang, Tsung-Leo; Jiang, Tsung Shann.
In: Journal of Colloid And Interface Science, Vol. 119, No. 1, 01.01.1987, p. 81-99.Research output: Contribution to journal › Article
TY - JOUR
T1 - Oscillatory torsional interfacial viscometer
AU - Ray, Yia Ching
AU - Lee, Hae Ok
AU - Jiang, Tsung-Leo
AU - Jiang, Tsung Shann
PY - 1987/1/1
Y1 - 1987/1/1
N2 - Exact solutions for the torsional interfacial viscometer with oscillatory motion are obtained. A sinusoidal oscillation is imposed upon the angular velocity of the dish. The bob is induced to oscillate with the same frequency as that of the dish. From measurements of the amplitude ratio and phase angle between these two oscillations, the surface shear viscosity can be determined. The analysis is confirmed by experimental measurement. The effects of various operational and instrumental variables upon the response of the bob are discussed. Typical behavior of the phase interface between the liquid-liquid adjoining phases is presented. The theoretical results suggest that the torsional interfacial viscometer with oscillatory motion is a viable instrument for measuring a wide spectrum of interfacial shear viscosity. The apparatus is schematically described. Experiments with the interface between air and an aqueous solution of sodium dodecyl sulfate and dodecyl alcohol are carried out and the results are analyzed by the developed theory.
AB - Exact solutions for the torsional interfacial viscometer with oscillatory motion are obtained. A sinusoidal oscillation is imposed upon the angular velocity of the dish. The bob is induced to oscillate with the same frequency as that of the dish. From measurements of the amplitude ratio and phase angle between these two oscillations, the surface shear viscosity can be determined. The analysis is confirmed by experimental measurement. The effects of various operational and instrumental variables upon the response of the bob are discussed. Typical behavior of the phase interface between the liquid-liquid adjoining phases is presented. The theoretical results suggest that the torsional interfacial viscometer with oscillatory motion is a viable instrument for measuring a wide spectrum of interfacial shear viscosity. The apparatus is schematically described. Experiments with the interface between air and an aqueous solution of sodium dodecyl sulfate and dodecyl alcohol are carried out and the results are analyzed by the developed theory.
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U2 - 10.1016/0021-9797(87)90247-5
DO - 10.1016/0021-9797(87)90247-5
M3 - Article
VL - 119
SP - 81
EP - 99
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
SN - 0021-9797
IS - 1
ER -