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Shear Thinning Properties of Dense Suspensions: Rheology and Flow Dichroism

Published online by Cambridge University Press:  15 February 2011

Jonathan W. Bender  and
Norman J. Wagner
Jonathan W. Bender
Affiliation:
University of Delaware, Department of Chemical Engineering, Newark, DE 19716
Norman J. Wagner
Affiliation:
University of Delaware, Department of Chemical Engineering, Newark, DE 19716
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Abstract

An expression relating dichroism to the non-equilibrium structure was derived through Rayleigh-Gans light scattering theory. Comparison of this expression to a micromechanical expression for the thermodynamic contribution to the total stress demonstrates a stress-optical relationship. Optical dichroism and viscosity measurements on monodisperse, near hard-sphere suspensions as a function of shear rate, volume fraction, and particle size demonstrated the relationship experimentally. This work provides a rheo-optical method for determining the various contributions of the colloidal forces to the overall stress.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 289: Symposium M – Flow and Microstructure of Dense Suspensions , 1992 , 81
Copyright
Copyright © Materials Research Society 1993

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References

1 Laun, H.M., Bung, R. et al., J. of Rheology 36(4), 743 (1992)Google Scholar
2 Russel, W.B. in Particulate Two-Phase Flow, edited by Roco, M.C. (Butterworths, 1991)Google Scholar
3 Brady, J.F. and Bossis, G., Annual Rev. Fluid Mech. 20, 111 (1988)Google Scholar
4 Dhont, J.K.G., J. Fluid Mech., 204, 421 (1989)Google Scholar
5 Wagner, N.J. and Russel, W.B., Phys. Fluids A 2(4), 491 (1990)Google Scholar
6 Johnson, S.J., Kruif, C.G. de, and May, R.P., J. Chem. Phys. 89, 5909 (1988)Google Scholar
7 Bossis, G. and Brady, J.F., J. Chem. Phys. 91(3), 1866 (1989)Google Scholar
8 Wagner, N.J. and Ackerson, B.J., J. Chem. Phys. 97(2), 1473 (1992)Google Scholar
9 Wagner, N.J., Fuller, G.G., and Russel, W.B., J. Chem. Phys. 89(3), 1580 (1988)Google Scholar
10 Adriani, P.M. and Gast, A.P., J. Chem. Phys. 91(10), 6282 (1989)Google Scholar
11 Wagner, N.J., J.Chem. Phys. 94(10), 6931 (1991)Google Scholar
12 Bender, J.W. and Wagner, N.J., to be publishedGoogle Scholar
13 Stöber, W., Fink, A., and Bohn, E., J. Colloid Interf. Sci. 26, 62 (1968)Google Scholar
14 Philipse, A.P. and Vrij, A., J. Colloid Interf. Sci. 128(1), 121 (1989)Google Scholar
15 Bogush, G.H., Tracy, M.A., and Zukoski, C.F., J. Non-Cryst. Solids, 104, 95 (1988)Google Scholar
16 Philipse, A., Ph. D. thesis, Utrecht, Netherlands (1987)Google Scholar
17 Fuller, G.G., Annual Rev. Fluid Mech. 22, 387 (1990)Google Scholar
18 Frattini, P.L. and Fuller, G.G., J. Fluid Mech. 168, 119 (1986); J. Colloid Interf. Sci. 100 (2), 506 (1984); J. Rheology 28 (1), 61 (1984)Google Scholar
19 Wagner, N.J. and Russel, W.B., Physica A, 155, 475 (1989)Google Scholar
20 Krieger, I.M. and Dougherty, T.J., Trans. Soc. Rheol. 3, 137 (1959)Google Scholar
21 Bender, J.W. and Wagner, N.J., work in progressGoogle Scholar
22 Kruif, C.G. de, lersel, E.M.F. van, Vrij, A., and Russel, W.B., J. Chem. Phys. 83(9), 4717 (1985)Google Scholar
23 Werff, J.C. van der, Ph. D. thesis, Utrecht, Netherlands (1990)Google Scholar