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Oscillatory shear and high-pressure dielectric study of 5-methyl-3-heptanol |
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| Authors: | C. Gainaru M. Wikarek S. Pawlus M. Paluch R. Figuli M. Wilhelm T. Hecksher B. Jakobsen J. C. Dyre R. Böhmer |
| Affiliation: | 1. Fakult?t Physik, Technische Universit?t Dortmund, 44221, Dortmund, Germany 2. Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007, Katowice, Poland 3. Karlsruher Institut für Technologie, 76128, Karlsruhe, Germany 4. DNRF Centre “Glass and Time”, IMFUFA, Department of Sciences, Roskilde University, Postbox 260, DK-4000, Roskilde, Denmark |
| Abstract: | The monohydroxy alcohol 5-methyl-3-heptanol is studied using rheology at ambient pressure and using dielectric spectroscopy at elevated pressures up to 1.03 GPa. Both experimental techniques reveal that the relaxational behavior of this liquid is intermediate between those that show a large Debye process, such as 2-ethyl-1-hexanol, or a small Debye-like feature, such as 4-methyl-3-heptanol, with which comparisons are made. Various phenomenological approaches assigning a time scale for the rheological signature of supramolecular dynamics in monohydroxy alcohols are discussed. |
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