Dielectric relaxation time in normal and supercooled simple liquids and its relation to other liquid properties

Mallikarjuns, S.

(1964)

Mallikarjuns, S. (1964) Dielectric relaxation time in normal and supercooled simple liquids and its relation to other liquid properties.

Our Full Text Deposits

Full text access: Open

10098094.pdf - 23.24 MB

Abstract

Measurements have been made on viscosity, density, static dielectric constant and dielectric constant at wavelengths of 3.279 cm and 0.847 cm. For some liquids measurements have also been made at 29.89 cm and 19.88 cm. The critical wavelength has been calculated from the results and its temperature dependence compared with that of viscosity. The present viscosity measurements allow investigation of the dependence of viscosity of liquids on temperature over a great range of temperature, and the viscosity at normal pressure of a large number of liquids can be described successfully by Batschinski's relation where A and b are constants and V is the specific volume. No discontinuity is apparent between ordinary liquid and supercooled liquid states. Reasonably consistent values of critical wavelengths are obtained from the two experimental wavelengths over a range of temperature from +50°C to -50°C, except for Iodobenzene, Quinoline and iso-quinoline. The measurements done for these three liquids at wavelengths of 29.89 cm and 19.88 cm suggest that there may be a second dispersion region leading to abnormally high values of at the shorter wavelengths. The results also suggest that in all cases studied less free volume is required for molecular rotation than for viscous flow so that the critical wavelength varies less rapidly with temperature than the viscosity does.

Information about this Version

This is a Accepted version
This version's date is: 1964
This item is not peer reviewed

Link to this Version

https://repository.royalholloway.ac.uk/items/b7385491-3f9c-4039-a2ff-e80948c0e5e1/1/

Item TypeThesis (Doctoral)
TitleDielectric relaxation time in normal and supercooled simple liquids and its relation to other liquid properties
AuthorsMallikarjuns, S.
Uncontrolled KeywordsPhysical Chemistry; Pure Sciences; Dielectric; Liquid; Liquids; Normal; Other; Properties; Relation; Relaxation; Simple; Supercooled; Supercooled Liquids; Supercooled Liquids; Time
Departments

Identifiers

ISBN978-1-339-62158-6

Deposited by () on 31-Jan-2017 in Royal Holloway Research Online.Last modified on 31-Jan-2017

Notes

Digitised in partnership with ProQuest, 2015-2016. Institution: University of London, Bedford College (United Kingdom).


Details