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Shear device

last modified 21-05-2010 17:15

The combination of shearing with X-ray diffraction is often applied for study of polymer processing [1, 2].
The combination of rheology with shearing is especially interesting since it allows the quantitative determination of structural parameters such as interchain correlations and molecular orientations.

Shear device installed on the beamline

A parallel plate shear cell is obtained from Linkam. This shear cell can operate in the temperature range from -50° C to + 400° C.

Couette shear cell

The Couette cell in use in DUBBLE is a modified version of the Couette cell as described in:

J.A. Pople, I. W. Hamley and G. P. Diakun, An integrated Couette system for in situ shearing of polymer and surfactant solutions and gels with simultaneous small angle X-ray scattering, Rev. Sci. Instrum. 69 (1998), no. 8, 3015-3021.

Modifications to the original design were carried out by Jan Vermant and Bart Goderis from Leuven University.