Please use this identifier to cite or link to this item: doi:10.22028/D291-24139
Title: Light scattering of SiO2 monodisperse microspheres prepared by the sol-gel route
Author(s): Ziemath, Ervino C.
Aegerter, Michel A.
Moreira, J. E. C.
Figueiredo, M.
Zarzycki, Jerzy
Language: English
Year of Publication: 1988
OPUS Source: Better ceramics through chemistry III : symposium held April 5-8, 1988, Reno, Nevada, U.S.A / ed.: C. Jeffrey Brinker... - Pittsburgh : Materials Research Society, 1988, S. 311-316
SWD key words: Sol-Gel-Verfahren
Dynamische Lichtstreuung
DDC notations: 500 Science
Publikation type: Conference Paper
Abstract: SiO2 microspheres have been prepared from TMOS/Methanol/water sols in basic condition (pH = 12) by the Stöber method and studied by TEM static and dynamic light scattering techniques in order to determine the mean size R¯, size distribution, hydrodynamic radius R(H), radius of gyration R(G) and translational diffusion coefficient D(t) ; the ratio R(H)/R(G) was found less, than 0.55 and the aggregates have a fractal geometry with df ~ 2.3 ± 0,05. The results are compared to preivous work on colloidal silica aggregates prepared by other techniques and discussed.
Link to this record: urn:nbn:de:bsz:291-scidok-22957
ISBN: 0-931837-91-X
Date of registration: 13-Aug-2009
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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