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

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Clays and Clay Minerals

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.

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Authors and Affiliations

  1. Departments of Chemistry and Materials Science and Engineering, Lehigh University, Bethlehem, Pennsylvania, 18015-3172, USA

    Jason H. Rouse & Gregory S. Ferguson

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  1. Jason H. Rouse
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  2. Gregory S. Ferguson
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Correspondence to Gregory S. Ferguson.

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Rouse, J.H., Ferguson, G.S. Does water swell the ordered domains in polyelectrolyte/clay multilayers?. Clays Clay Miner. 55, 160–164 (2007). https://doi.org/10.1346/CCMN.2007.0550205

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  • DOI: https://doi.org/10.1346/CCMN.2007.0550205

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