Talk (non-conference) (Plenary/Keynote)

FZJ-2017-00379

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Probing the microstructural origin of complex flow behaviour

Lettinga, M. P. (Corresponding author)FZJ*

2016

Abstract: Soft matter materials can classically be characterized by their mechanical response to shear flow, so by rheology. Knowledge of the material structure in flow is, however, crucial to understand, predict and tune flow behaviour and therefore the rheological response. In this talk I will show how time-resolved scattering and microscopy techniques can be employed to probe the structure of materials in situ, during the rheological experiment , and thus to establish a link between the micro structure and the macroscopic response.Time-resolved neutron scattering and confocal microscopy were used to study the non-linear response of several supra-molecular polymers. A novel X-ray set-up was used to study the yielding behaviour of nematic dispersion of colloidal platelets, the most common colloidal system in nature. This set-up allows for the 3—D reconstruction in situ of the structure and highlights the effect that confinement has on complex flow behaviour.

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Contributing Institute(s):

1. Weiche Materie (ICS-3)

Research Program(s):

1. 551 - Functional Macromolecules and Complexes (POF3-551) (POF3-551)

Appears in the scientific report 2016

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Database coverage:
No Authors Fulltext

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