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Adsorption of Water by Montmorillonite—Poly(Ethylene Glycol) Adsorption Products

Published online by Cambridge University Press:  09 July 2018

R. L. Parfitt  and
D. J. Greenland
R. L. Parfitt
Affiliation:
Department of Agricultural Biochemistry and Soil Science, Waite Agricultural Research Institute, University of Adelaide
D. J. Greenland
Affiliation:
Department of Agricultural Biochemistry and Soil Science, Waite Agricultural Research Institute, University of Adelaide
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Abstract

Water adsorption by interlamellar complexes of poly(ethylene glycols) and montmorillonite has been determined using a silica spiral spring, and supplementary data obtained by X-ray and infrared techniques. The adsorbed water enters the interlamellar region, where it is associated with the exchangeable cation. The lattice swells to accommodate the intercalated water. Only weak hydrogen bonds are formed between the surface of the clay and the adsorbed water or between adsorbed PEG molecules and adsorbed water. The presence of PEG did not prevent extensive swelling of sodium montmorillonite.

Type
Research Article
Information
Clay Minerals , Volume 8 , Issue 3 , July 1970 , pp. 317 - 324
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1970

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