Broad-band dielectric spectroscopy of some alcohols down to the glass transition temperature T_g

Authors: De Francesco L.; Cutroni M.; Mandanici A.

Source: Philosophical Magazine B, Volume 82, Number 5, 1 March 2002 , pp. 625-635(11)

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Abstract:

The dielectric spectroscopy technique has been used over a broad-band range of frequencies to compare the dynamic response of some supercooled liquids down to the glass transition temperature T_g. Glycerol, 1,2-propanediol and 2,3-butanediol have been chosen because they differ in both their chain lengths, that is the number of carbon atoms, and their hydroxyl groups OH. The frequency and temperature dependences of the real and imaginary parts of the dielectric permittivity seem to be correlated to the structure of the molecules.

Language: English

Document Type: Research article

Publication date: 2002-03-01

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