NDLI: Nanofilms of adsorbed water in clay: Mechanism of formation and properties

Content Provider	Springer Nature Link
Author	Osipov, V. I.
Copyright Year	2012
Abstract	The process of adsorption of water molecules by silicate surfaces of clay minerals is considered. The process leads to the formation of nano-thickness films of adsorbed water. An epitaxial mechanism of nanofilm formation is considered, consisting in the growth of structured hydrate layers under the effect of oxygen and hydroxyl surfaces of clay minerals. The difference between the sizes of hexagonal cells of the solid surface and the forming water film deforms hydrogen bonds and produces inner stress in both the film structure and the mineral lattice. The latter is reflected in the changing size of montmorillonite cell along the b-axis. The thickness of the newly formed adsorption water layer is shown to be controlled by the degree of hydrogen bond deformation, the stress developed inside the nanofilm, the cell size, and the rigidity (strength) of the mineral structure. The deformation of hydrogen bonds and water nanofilm structure determines its specific properties, i.e., wedging pressure, high viscosity, low temperatures of water freezing, dielectric conductivity, etc.
Starting Page	709
Ending Page	721
Page Count	13
File Format	PDF
ISSN	00978078
Journal	Water Resources
Volume Number	39
Issue Number	7
e-ISSN	1608344X
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2012-12-28
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	adsorption wetting heat adsorbed water films epitaxy regularities of water nanofilm formation nanofilm properties Hydrogeology Waste Water Technology Water Pollution Control Water Management Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology

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