Comparison of the transverse viscoelastic properties of benzyl benzoate from ultrasonic and light-scattering measurements |
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Authors: | P Bezot GM Searby P Sixou |
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Institution: | Laboratoire de Physique de la Matière Condensée L.A. 190, Parc Valrose, 06034 Nice Cedex, France |
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Abstract: | The results obtained from depolarised light scattering experiments as a function of temperature are compared with ultrasonic impedance measurements previously obtained by Barlow and Erginsav. At low temperatures (in the supercooled region) a depolarised propagating doublet is observed and the velocity thus obtained is concordant with Barlow's results. At higher temperatures the relaxation time, τC, is obtained from the width of the depolarised spectrum. Contrary to the suggestion of Barlow, there is little correspondence between τC and the retardation time for viscous response. |
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