| Numéro |
J. Phys. I France
Volume 2, Numéro 6, June 1992
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|---|---|---|
| Page(s) | 791 - 799 | |
| DOI | https://doi.org/10.1051/jp1:1992179 | |
DOI: 10.1051/jp1:1992179
J. Phys. I France 2 (1992) 791-799
Laboratoire de Science des Matériaux Vitreux URA CNRS n° 1119, Université de Montpellier II, F-34095 Montpellier Cedex, France
© Les Editions de Physique 1992
J. Phys. I France 2 (1992) 791-799
Small-angle neutron scattering in model porous systems : a study of fractal aggregates of silica spheres
Marie Foret, Jacques Pelous and René VacherLaboratoire de Science des Matériaux Vitreux URA CNRS n° 1119, Université de Montpellier II, F-34095 Montpellier Cedex, France
(Received 30 December 1991, accepted 13 February 1992)
Abstract
Porous solids built of fractal clusters can be obtained by destabilization of quasi-monodisperse silica sols. Small-angle
neutron scattering, associated with transmission-electron microscopy, was used for a structural investigation of these aerogels
in a broad length scale. We present a quantitative analysis of the data for materials with different particle sizes and polydispersities.
The analysis of the wavector region corresponding to the crossover between surface and volume scattering is especially emphasized.
© Les Editions de Physique 1992