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Chapter 17: X-Ray rheology of liquid crystal polymers

Andresen, E. and Mitchell, G. (2013) Chapter 17: X-Ray rheology of liquid crystal polymers. In: Mitchell, G. (ed.) Rheology : theory, properties and practical applications. Nova Science Publishers, New York, pp. 443-466. ISBN 9781626189997

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X-ray Rheology is an experimental technique which uses time-ressolved x-ray scattering as probe of the molecular level structural reorganisation which accompanies flow. It provides quantitative information on the direction alignment and on the level of global orientation. This information is very helpful in interpreting the classic rheological data on liquid crystal polymers. In this research we use data obtained from a cellulose derivate which exhibits a thermotropic liquid crystal phase. We show how increased shear rates lead to a rapid rise in the global orientation and we related this to therories of flow in liquid crystal polymers from the literature. We show that the relaxation time is independent of the prior shear rate.

Item Type:Book or Report Section
Divisions:Interdisciplinary centres and themes > Chemical Analysis Facility (CAF) > Electron Microscopy Laboratory (CAF)
ID Code:32518
Publisher:Nova Science Publishers

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