ISSN:
1434-6079
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The structure of silica acrogel, a porous low density material having small particle size prepared from TMOS has been investigated by DSC, SAXS, and Raman spectroscopy. The predominant particle size of the aerogel were determined to be near 3 nm by SAXS analysis. The Raman spectra are qualitatively similar to those from fused silica, although the sample before heat treatment had typical Raman peaks assigned to organic groups contained in TMOS. The observed relatively intense peaks at near 490 and 606 cm−1 suggest the existence of small rings, e.g., six(3-SiO) or eight(4-SiO) membered, in the aerogel. The structure change of the aerogel with temperature was also studied by Raman spectroscopy.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01425666
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