Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-26T02:47:32.275Z Has data issue: false hasContentIssue false
  • English
  • Français

Concentrated Colloidal Dispersions

Published online by Cambridge University Press:  29 November 2013

William B. Russel
Get access

Extract

The rheology of dispersions often appears to be extraordinarily complex since these materials traverse all states of matter from simple Newtonian fluids to Hookean solids. Highly nonlinear viscoplastic or viscoelastic responses, with persistent time dependence, often frustrate attempts to address the mechanics without attempting to characterize the composition or understand the thermodynamics. The difficulty lies in the sensitivity of the stresses to the microstructure, which in turn depends on the interparticle forces and the deformation history.

However, combining rheological measurements with other probes of the structure can permit one to anticipate the response under different conditions and, sometimes, to elucidate the relevant forces. Even better, one may learn to manipulate the composition to obtain the rheology desired for a specific process or a particular product, such as thickeners for coatings. The key lies in linking the composition, interparticle forces, and rheology. This review illustrates the current knowledge of those relationships and identifies some sources, from which the bulk of the content comes for those who wish to pursue the subject further.

This brief treatment first surveys phase behavior and interparticle forces. These concepts, combined with dimensional analysis and simple ideas from statistical mechanics, motivate correlations of data for well-characterized, stable dispersions and both weakly and strongly flocculated dispersions.

Type
Materials Rheology
Information
MRS Bulletin , Volume 16 , Issue 8 , August 1991 , pp. 27 - 31
Copyright
Copyright © Materials Research Society 1991

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1.Russel, W.B., Saville, D.A., and Schowalter, W.R., Colloidal Dispersions (Cambridge University Press, 1989).CrossRefGoogle Scholar
2.Goodwin, J.W. and Ottewill, R.H., J. Cham. Soc. Faraday Trans. 87 (1991) p. 357–369.CrossRefGoogle Scholar
3.de Kruif, C.G., in Hydrodynamics of Dispersed Media, edited by Hulin, J.P., Cazabat, A.M., Guyon, E., and Carmona, F. (Elsevier, Amsterdam, 1990) p. 70–101.Google Scholar
4.Russel, W.B., Ceramic Powder Sci. III (1990) p. 361–373.Google Scholar
5.Seaton, N.A. and Glandt, E.D., J. Chem. Phys. 86 (1987) p. 4668–4677.CrossRefGoogle Scholar
6.van Megen, W., Underwood, S.M., and Pusey, P.N., J. Chem. Soc. Faraday Trans. 87 (1991) p. 395–402.CrossRefGoogle Scholar
7.Krieger, I.M., Adv. Colloid Interface Sci. 3 (1972) p. 111–136.CrossRefGoogle Scholar
8.de Kruif, C.G., van Iersel, E.M.F., Vrij, A., and Russel, W.B., J. Chem. Phys. 83 (1986) p. 4717–4725.CrossRefGoogle Scholar
9.Mewis, J., Frith, W.J., Strivens, T.A., and Russel, W.B., AIChE J. 35 (1989) p. 415–422.CrossRefGoogle Scholar
10.Buscall, R., J. Chem. Soc. Faraday Trans. 87 (1991) p. 1365–1370.CrossRefGoogle Scholar
11.Goodwin, J.W. and Hughes, R.W., in Macromolecular Liquids, edited by Safinya, C.R., Safran, S.A., and Pincus, P.A. (Mater. Res. Soc. Symp. Proc. 177, Pittsburgh, PA, 1990) p. 187–198.Google Scholar
12.Chen, L.B. and Zukoski, C.F., J. Chem. Soc. Faraday Trans. 86 (1990) p. 2629–2639; Phys. Rev. Lett. 65 (1990) p. 44-47.CrossRefGoogle Scholar
13.Hoffman, R.L., Trans. Soc. Rheol. 16 (1972) p. 155–173; J. Colloid Interface Sci. 46 (1974) p. 491–506.CrossRefGoogle Scholar
14.Laun, M., Angew. Macromol. Chemie 123/124 (1984) p. 335–359.CrossRefGoogle Scholar
15.Woutersen, A.T.J.M. and de Kruif, C.G., J. Chem. Phys. (1991) (submitted).Google Scholar
16.Sperry, P.R., Thibeault, J.C., and Kostanek, E.C., Adv. Coatings Science and Technology 9 (1987) p. 1–11.Google Scholar
17.Partridge, S.J., PhD dissertation, University of Bristol (1985).Google Scholar
18.Velamakanni, B.V., Chang, J.C., Lange, F.F., and Pearson, D.S., Langmuir 6 (1990) p. 1323–1325.CrossRefGoogle Scholar
19.Chen, M. and Russel, W.B., J. Colloid Interface Sci. 141 (1990) p. 564–578.CrossRefGoogle Scholar
20.Buscall, R., Mills, P.D.A., Goodwin, J.W., and Lawson, D.W., J. Chem. Soc. Faraday Trans I 84 (1988) p. 4249–4260.CrossRefGoogle Scholar
21.Buscall, R. and White, L.R., J. Chem. Soc. Faraday Trans. I 83 (1987) p. 873–891.CrossRefGoogle Scholar
22.Buscall, R., Colloids Surf. 43 (1990) p. 33–53.CrossRefGoogle Scholar