SANS AND SAXS INVESTIGATIONS OF SILICA AEROGELS - CROSSOVER FROM FRACTAL STRUCTURE TO SHORT-RANGE PACKING

被引：12

作者：

FORET, M ^{[1
]}

PELOUS, J ^{[1
]}

VACHER, R ^{[1
]}

MARIGNAN, J ^{[1
]}

机构：

[1] UNIV MONTPELLIER 2,CNRS,URA 233,DYNAM PHASES CONDENSEES GRP,F-34095 MONTPELLIER,FRANCE

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1992年 / 145卷 / 1-3期

关键词：

D O I：

10.1016/S0022-3093(05)80442-9

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The structure of silica aerogels prepared by destabilization of colloidal sols was investigated by transmission electron microscopy (TEM), small-angle neutron (SANS) and X-ray (SAXS) scatterings. The size of the elementary particles was directly measured in real space from the micrographs. This allowed one to relate quantitatively the crossovers observed in the wavevector dependence of the SANS and SAXS intensities to the particle dimensions. By changing the silica concentration in the initial solution, mutually self-similar series of aerogels were obtained.

引用

页码：133 / 135

页数：3

共 6 条

[1] FORET M, IN PRESS J PHYS PARI
[2] POWER-LAW CORRELATIONS AND FINITE-SIZE EFFECTS IN SILICA PARTICLE AGGREGATES STUDIED BY SMALL-ANGLE NEUTRON-SCATTERING
FRELTOFT, T
KJEMS, JK
SINHA, SK
[J]. PHYSICAL REVIEW B, 1986, 33 (01): : 269 - 275
[3] Rose AJ, 1956, B MINERAL, V79, P619
[4] Teixeira J., 1986, On Growth and Form - Fractal and Non-Fractal Patterns in Physics. Proceedings of the NATO Advanced Study Institute, P145
[5] FRACTAL STRUCTURE OF BASE-CATALYZED AND DENSIFIED SILICA AEROGELS
VACHER, R
WOIGNIER, T
PHALIPPOU, J
PELOUS, J
COURTENS, E
[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS, 1988, 106 (1-3) : 161 - 165
[6] STRUCTURE AND SELF-SIMILARITY OF SILICA AEROGELS
VACHER, R
WOIGNIER, T
PELOUS, J
COURTENS, E
[J]. PHYSICAL REVIEW B, 1988, 37 (11): : 6500 - 6503

← 1 →