Abstract
Viscosity measurements in a broad temperature range display a variation over 11 orders of magnitude and show a crossover at about T+=285 K, comparable with dielectric results from a Stickel evaluation. The index R, i.e., the product of dielectric loss peak maximum frequencies times the viscosity, divided by temperature, decreases by a factor of 3.5 while viscosity varies by seven orders of magnitude. Dynamic shear measurements on glycerol are reported for the temperature of T=192.5 K. The shape of the shear dispersion in the α relaxation zone was fitted with Havriliak–Negami and stretched exponential functions. The shape parameters show considerable differences between different relaxation methods. No indications of a separate (β) secondary relaxation were found below the glass temperature Tg.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 9:59 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 5, 2024, 9:02 p.m.) |
Indexed | 1 month ago (July 28, 2025, 5:31 p.m.) |
Issued | 24 years, 9 months ago (Nov. 22, 2000) |
Published | 24 years, 9 months ago (Nov. 22, 2000) |
Published Print | 24 years, 9 months ago (Nov. 22, 2000) |
@article{Schr_ter_2000, title={Viscosity and shear response at the dynamic glass transition of glycerol}, volume={113}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1319616}, DOI={10.1063/1.1319616}, number={20}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Schröter, K. and Donth, E.}, year={2000}, month=nov, pages={9101–9108} }