Oscillatory torsional interfacial viscometer

Yia Ching Ray; Hae Ok Lee; Tsung Leo Jiang; Tsung Shann Jiang

doi:10.1016/0021-9797(87)90247-5

Oscillatory torsional interfacial viscometer

Yia Ching Ray, Hae Ok Lee, Tsung Leo Jiang, Tsung Shann Jiang

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

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	https://doi.org/10.1016/0021-9797(87)90247-5
Publication status	Published - 1987 Sep

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Biomaterials
Surfaces, Coatings and Films
Colloid and Surface Chemistry

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title = "Oscillatory torsional interfacial viscometer",

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.",

author = "Ray, {Yia Ching} and Lee, {Hae Ok} and Jiang, {Tsung Leo} and Jiang, {Tsung Shann}",

note = "Funding Information: This material is based upon work supported by the National ScienceF oundationu nder Grant CPE-8307873. The authors are also grateful to the Campus Research Board, Universityo f Illinois at Chicago, for partial financials up-port.",

year = "1987",

month = sep,

doi = "10.1016/0021-9797(87)90247-5",

language = "English",

volume = "119",

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T1 - Oscillatory torsional interfacial viscometer

AU - Ray, Yia Ching

AU - Lee, Hae Ok

AU - Jiang, Tsung Leo

AU - Jiang, Tsung Shann

N1 - Funding Information: This material is based upon work supported by the National ScienceF oundationu nder Grant CPE-8307873. The authors are also grateful to the Campus Research Board, Universityo f Illinois at Chicago, for partial financials up-port.

PY - 1987/9

Y1 - 1987/9

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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JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

SN - 0021-9797

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Oscillatory torsional interfacial viscometer

Abstract

All Science Journal Classification (ASJC) codes

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