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Viscoelastic Probes of Suspension Structure

Published online by Cambridge University Press:  28 February 2011

C. F. Zukoski,
J. W. Goodwin,
R. W. Hughes and
S. J. Partridge
C. F. Zukoski
Affiliation:
Dept. of Chemical Engineering, University of Illinois, Urbana, Illinois 61801
J. W. Goodwin
Affiliation:
Dept. of Physical Chemistry, Bristol University, Bristol, U.K.
R. W. Hughes
Affiliation:
Dept. of Physical Chemistry, Bristol University, Bristol, U.K.
S. J. Partridge
Affiliation:
Dept. of Physical Chemistry, Bristol University, Bristol, U.K.
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Abstract

The use of the high frequency elastic modulus, G∞, to probe particle interactions in weakly agglomerated, concentrated suspensions is discussed. We show that a model based on pair interaction potentials and a statistical description of pair spatial distribution yields accurate prediction of the volume fraction dependence of G∞. The use of statistical treatments of particle distributions as predicted from particle interaction potentials is found to provide insight on how surface chemistry affects the uniformity of powder compacts.

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References

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