The Surface Geometry of Vycor

The interface geometry of Vycor porous glass was examined by adsorption of water in conjunction with small-angle scattering of X rays and neutrons. When the sample is dry, a fractal surface with a fractal dimensionD∼ 2.5 was detected. When wet, a soft hydrogel is formed, resulting in a diffuse bound...

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Bibliographic Details
Published inJournal of colloid and interface science Vol. 193; no. 1; pp. 137 - 139
Main Authors Mitropoulos, A.Ch, Makri, P.K., Kanellopoulos, N.K., Keiderling, U., Wiedenmann, A.
Format Journal Article
LanguageEnglish
Published San Diego, CA Elsevier Inc 01.09.1997
Elsevier
Subjects
Chemistry
Colloidal state and disperse state
defractalization
Exact sciences and technology
General and physical chemistry
porous glass
Porous materials
small-angle scattering
small-angle scattering
defractalization
porous glass
Water
Adsorption
Small angle neutron scattering
Fractal dimension
Vycor
Porous glass
Small angle X ray scattering
Experimental study
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Summary:The interface geometry of Vycor porous glass was examined by adsorption of water in conjunction with small-angle scattering of X rays and neutrons. When the sample is dry, a fractal surface with a fractal dimensionD∼ 2.5 was detected. When wet, a soft hydrogel is formed, resulting in a diffuse boundary. To observe a fractal surface, thorough drying of the sample is necessary, however. It was shown that a small amount of water, 3% w/w, is sufficient to render the surface smooth.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0021-9797
1095-7103
DOI:10.1006/jcis.1997.5033