Abstract
In this contribution we investigate whether the structure of concentrated shear-ordered dispersions as determined by small angle synchrotron x-ray or neutron scattering can be rationalized in terms of viscoelastic flow behavior as in rheological investigations. Although so far scattering experiments have contributed little to the understanding of rheological systems we are convinced that rheological investigations will profit considerably from a better knowledge of the micro-structure of the dispersions. Sheared dispersions are usually ordered in layers. There are two kinds of ordering of interest: (a) The structure in a layer (b) The structure between the layers. One interesting point of mesogenic systems is their viscoelastic nature. There is strong evidence that the structure in a layer (a) can be treated as elastic or solid-like, whereas the structure (b) between the layers seems to be fluid-like. With scattering experiments one is in the excellent position that two experiments exist with which the two effects can be investigated separately: The solid-like microstructure (a) can be determined at perpendicular incidence. The fluid-like microstructure (b) is given by the scattering intensity along certain Bragg rods (3n±1-rods). In particular this second micro-structure may change in time by aging.
Author to whom correspondence should be addressed.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
C. Kittel, Introduction to Solid State Physics, Wiley, New York, 1967
A. Guiniers, X-Ray Diffraction, Freeman, London, 1963
N. H. Clark, A. J. Hurd and B. J. Ackerson, Nature, 281, 57 (1979)
Ch. Dux and H. Versmold, Physica A, 235, 75 (1997)
Ch. Dux and H. Versmold, Phys. Rev. Lett., 78, 1811 (1997)
V. Reus, L. Belloni, T. Zemb, N. Lutterbach and H. Versmold, J. Phys. II, France 7, 603 (1997)
H. Versmold, S. Musa, and H. Kubetzki, and V. Urban, J. Chem. Phys., in preparation
L. B. Chen, C. F. Zukoski, B. J. Ackerson, H. J. M. Hanley, G. C. Straty, J. Baker and
C. J. Glinka, Phys. Rev. Lett. 69, 688 (1992)
H. Versmold, S. Musa and A. Bierbaum, J. Chem. Phys., 116, 2658 (2002)
H. Versmold and P. Lindner, Langmuir, 10, 3043 (1994)
P. N. Pusey, Colloidal Suspensions, in “Liquides, Crystallization et Transition Vitreuse”, Les Houches 1989, Ed. J.P Hansen, D. Levesque et J. Zinn-Justin, Vol. II p. 763, North-Holland, 1991
B. J. Ackerson, J. B. Hayter, N. A. Clark and L. Cotter, J. Chem. Phys., 84, 2344 (1984)
S. Ashdown, I. Markovic, R. H. Ottewill, P. Lindner, R. C. Oberthür and A. R. Rennie, Langmuir, 6, 303 (1990)
H. M. Laun, R. Bung, S. Hess, W. Loose, O. Hess, K. Hahn, E. Hädicke, R. Hingmann, F. F. Schmidt and P. Lindner, J. Rheol., 36, 743 (1992)
H. Versmold, S. Musa and Ch. Dux, P. Lindner and V. Urban, Langmuir, 17, 6812 (2001)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2004 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Versmold, H., Musa, S., Kubetzki, H. (2004). Visco-Elastic Behavior and Small Angle Scattering of Complex Fluids. In: Samios, J., Durov, V.A. (eds) Novel Approaches to the Structure and Dynamics of Liquids: Experiments, Theories and Simulations. NATO Science Series, vol 133. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-2384-2_16
Download citation
DOI: https://doi.org/10.1007/978-1-4020-2384-2_16
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-1847-3
Online ISBN: 978-1-4020-2384-2
eBook Packages: Springer Book Archive