ISSN:
1572-8927
Keywords:
Tetraethyl orthosilicate
;
ethanol
;
1-propanol
;
1-butanol
;
sol-gel
;
dielectric spectroscopy
;
dielectric relaxation
;
ceramics
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Dielectric properties of mixtures of 1-alcohols (ethanol, 1-butanol and 1-hexanol) and tetraethyl orthosilicate (TEOS) were determined by means of the time domain method (TDS). To all spectra were fitted a model function containing a sum of three debye relaxation terms with fixed τ2 and τ3. Initially, to 2–3 mole%, TEOS did not influence static permittivity nor main relaxation time of the alcohol. For higher concentrations there is a linear decrease in both these parameters. Qualitatively the effects of TEOS are comparable with those of a nonpolar hydrocarbon on the alcohol structure.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01075132
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