HARD SPHERE PROPERTIES AND CRYSTALLINE PACKING OF LYOPHILIC SILICA COLLOIDS
Open Access
- 1 March 1985
- journal article
- Published by EDP Sciences in Le Journal de Physique Colloques
- Vol. 46 (C3) , C3-295
- https://doi.org/10.1051/jphyscol:1985323
Abstract
It is shown that the static and dynamic interactions in the colloidal system of sterically stabilized silica spheres in an organic solvent can be described with the hard sphere model up to high volume fractions. At volume fractions above 0.5 a transition to an ordered structure may occur. For particles with a size above 200 nm the ordering is directly visible as iridescence, the result of Bragg reflection of visible light. In this paper we report on this novel colloidal crystal system. Some experimental light scattering results are discussed. Netplane spacing and packing fraction, which is well above 0.63, indicates either a bcc or fcc structureKeywords
This publication has 0 references indexed in Scilit: