Steady shear rheology of dilute polystyrene particle gels

This paper describes an experimental study on dispersions of monodisperse polystyrene (PS) spheres with a typical radius of 1 μm, dispersed in an electrolyte at high ionic strength, screening the electrostatic repulsion. These suspensions gelate at rest even at low volume fractions of PS particles....

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Bibliographic Details
Published in:Rheologica acta 1999-10, Vol.38 (4), p.257-267
Main Authors: FOLKERSMA, R, VAN DIEMEN, A. J. G, LAVEN, J, STEIN, H. N
Format: Article
Language:English
Subjects:
Applied sciences
Deuterium
Dilution
Dispersions
Energy dissipation
Equilibrium flow
Exact sciences and technology
Gels
Heavy water
Mathematical models
Organic polymers
Parameters
Physicochemistry of polymers
Polystyrene resins
Properties and characterization
Rheological properties
Rheology
Shear flow
Shear planes
Shear rate
Solution and gel properties
Steady flow
Viscosity
Viscous drag
Yield criteria
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Summary:This paper describes an experimental study on dispersions of monodisperse polystyrene (PS) spheres with a typical radius of 1 μm, dispersed in an electrolyte at high ionic strength, screening the electrostatic repulsion. These suspensions gelate at rest even at low volume fractions of PS particles. The density of the particles is matched with the solvent by using deuterium oxide for volume fractions φ≤0.117. Steady-state flow curves, viscosity as a function of shear rate, are measured and reported for 0.014
ISSN:0035-4511
1435-1528
DOI:10.1007/s003970050177