Double-layer and hydration forces measured between silica sheets subjected to various surface treatments

Grabbe, Alexis and Horn, Roger G. 1993, Double-layer and hydration forces measured between silica sheets subjected to various surface treatments, Journal of colloid and interface science, vol. 157, no. 2, pp. 375-383.

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Title Double-layer and hydration forces measured between silica sheets subjected to various surface treatments
Author(s) Grabbe, Alexis
Horn, Roger G.
Journal name Journal of colloid and interface science
Volume number 157
Issue number 2
Start page 375
End page 383
Total pages 9
Publisher Academic Press
Place of publication Maryland Heights, Mo.
Publication date 1993-05
ISSN 0021-9797
1095-7103
Keyword(s) hydration forces
silica sheet
surface treaments
Summary Force measurements between silica surfaces in aqueous solutions of NaCl are reported. Silica is prepared with one of three surface treatments: (i) flaming, (ii) exposure to steam for 150 h, and (iii) brief exposure to ammonia vapor. Analysis of electrical double-layer interactions indicates that the surface density of silanol groups increases with steam treatment, and that exposure to ammonia etches the surface slightly and renders it porous. The force at short range is dominated by a strong repulsion which is attributed to hydration of the surface. The hydration component of the force is not significantly affected by the surface treatments, nor by electrolyte concentration over the range investigated (up to 0.1 M).
Language eng
Field of Research 029999 Physical Sciences not elsewhere classified
Socio Economic Objective 970102 Expanding Knowledge in the Physical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2-s2.0-36448996421
Persistent URL http://hdl.handle.net/10536/DRO/DU:30041446

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