Please use this identifier to cite or link to this item: doi:10.22028/D291-24130
Title: A SAXS study of silica aerogels
Author(s): Craievich, Aldo F.
Aegerter, Michel A.
Dos Santos, Dayse Iara
Woignier, T.
Zarzycki, Jerzy
Language: English
Year of Publication: 1986
OPUS Source: A SAXS study of silica aerogels / Aldo Craievich ... - Rio de Janeiro : Centro Brasileiro de Pesquisas Físicas, 1986. - (Notas de Física ; CBPF NF-86/014), S. 1-29
SWD key words: Röntgen-Kleinwinkelstreuung
DDC notations: 500 Science
Publikation type: Report
Abstract: Aerogels produced hypercritical drying of gels from hydrolysis of TMOS in various pH conditions and subjected to a densification process were studied by SAXS using LURE synchrotron facility. The evaluation of scattering data combined with BET measurements leads to a model of aerogels consisting of a light density matrix in which meso- and macro-pores are embedded. No fractal features we observed for the gels, the Porod's limit having an exponent n=4. This could mean that either these aerogels are not fractals or that the SAXS method suffers from an inherent ambiguity for fractal dimension D=3.
Link to this record: urn:nbn:de:bsz:291-scidok-22707
Date of registration: 6-Aug-2009
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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