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Does water swell the ordered domains in polyelectrolyte/clay multilayers?

Published online by Cambridge University Press:  01 January 2024

Jason H. Rouse  and
Gregory S. Ferguson
Jason H. Rouse
Affiliation:
Departments of Chemistry and Materials Science and Engineering, Lehigh University, Bethlehem, Pennsylvania 18015-3172, USA
Gregory S. Ferguson*
Affiliation:
Departments of Chemistry and Materials Science and Engineering, Lehigh University, Bethlehem, Pennsylvania 18015-3172, USA
*
*E-mail address of corresponding author: gf03@lehigh.edu
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Abstract

X-ray diffraction has been used to study the sorption of water by multilayer films containing ordered stacks of alternating layers of an organic polyelectrolyte and individual platelets of a smectite. The position and shape of the 001 reflections due to the ordered polyelectrolyte/platelet stacks were essentially the same when in air at low relative humidity (23–25% RH) and under water. These data indicate that swelling occurs exclusively in X-ray amorphous regions within the film, and that the ordered polyelectrolyte/clay domains themselves are not ‘swellable’ by water.

Keywords

LaponiteMontmorilloniteMultilayerPolyelectrolytePolymer-clay CompositeStepwise AdsorptionSwelling
Type
Research Article
Information
Clays and Clay Minerals , Volume 55 , Issue 2 , April 2007 , pp. 160 - 164
Copyright
Copyright © 2007, The Clay Minerals Society

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