Pseudoplastic flow properties of lyophilic colloids

Fischer, Earl K.; Lindsley, Charles H.

doi:10.1016/0095-8522(48)90062-2

Cited by 13 publications

(2 citation statements)

References 16 publications

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“…However, there is a difference between the two viscosimeters. The data from the rotational viscosimeter show no correlation, presumably because the instrument was constructed with large clearance between cup and bob and with large diameter compared to the depth, causing the errors discussed by Fischer and Lindsley (6). Analysis of the data obtained with the capillary viscosimeters is beyond the scope of this paper, other than to demonstrate that the data fit the form of equation proposed.…”

Section: Discussionmentioning

confidence: 83%

The Viscosity of Suspensions of Spheres.

Robinson¹

1949

J. Phys. Chem.

117

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Section: Discussionmentioning

confidence: 83%

The Viscosity of Suspensions of Spheres.

Robinson¹

1949

J. Phys. Chem.

117

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“…In practice, however, it is simpler to use a single bob and apply the correction for the end-effect. Results obtained with this method are collected in Table VII [6]. It should be noted that the certified values for viscosity have not been used in computing the values listed in Tables VI and VI I.…”

Section: Examples Of Types Of Flowmentioning

confidence: 96%

Rheological Measurements with the Rotational Viscometer

Fischer

Lindsley

1948

Textile Research Journal

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The rotating cylinder viscometer in various forms has found wide use for the measurement of viscosity and the study of so-called anomalous flow. Starch pastes, pigment dispersions, printing pastes, and coatings are examples of materials used in the textile industry which exhibit complex flow properties. Identification of the different kinds of flow and measurement in terms of valid physical units are necessary before the properties of these materials can be correctly described. It can be expected that with adequate specification of flow properties more effective control in mill processes will become possible. This article is concerned with essential features of instrumentation, definition, and computation. THE ADVANTAGES of the cylindrical rotational viscometer are so numerous that it deserves wider use for industrial measurements. It may be used on suspensions as well as on clear liquids and it is suitable for -determination of viscosities over a wide range at variable rates of shear. Different types of flow properties may be identified, and the data may be expressed in dimensionally consistent units. As it is commonly used, however, the data cannot be expressed in rational units, and, as a consequence, the literature is cluttered with meaningless measurements.The unsatisfactory state of instrumentation in this field is in part responsible, since commercially available instruments of moderate cost need modification before they can be used to best advantage. , This paper presents details on the modification of one of these instruments, the well-known Stormer viscometer. The mechanical changes required are comparatively simple and can be made at small cost. The modified instrument makes possible a measurement of viscosities which is based on accepted physical principles and yields data of moderate precision which are easily reproducible. Because the operation of rotational viscometer has not been systematized, a preliminary discussion on terminology and an analysis of the basic factors for this measurement have been included here. Experimental results,

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Rheology of polyisobutylene. I. Theory and experimental procedures

Leaderman

1954

J. Polym. Sci.

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A formulation is given of the response of a body manifesting linear viscoelastic behavior in shear to arbitrary simple shear stress history. A description is given of procedures for the measurement of the retarded elasticity function and of the viscosity by means of experiments under constant shear stress and following removal of stress. The non‐Newtonian flow of polymers is considered. Existing information on the viscosity of polyisobutylene as a function of temperature and molecular weight is reviewed. The applicability of the kinetic theory of rubberlike elasticity to a system of linear molecules is discussed. The use is described of the concentric cylinder rotational viscometer for the measurement of non‐Newtonian flow and of linear viscoelastic behavior.

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Pseudoplastic flow properties of lyophilic colloids

Cited by 13 publications

References 16 publications

The Viscosity of Suspensions of Spheres.

The Viscosity of Suspensions of Spheres.

Rheological Measurements with the Rotational Viscometer

Rheology of polyisobutylene. I. Theory and experimental procedures

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