Abstract
The electrophysical properties of slightly altered sample of lignin are studied via dielectric spectroscopy in the frequency range of 10–2 to 106 Hz and temperature range from −120 to 160°C. The results are processed using the Havriliak–Negami frequency dispersion model. The presence of several dielectric constant relaxation mechanisms is confirmed. The energy of activation for temperature-dependent relaxation is determined.
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ACKNOWLEDGMENTS
This work was supported by the Russian Foundation for Basic Research, project no. 18-03-00672А and by the project agreement no. АААА-А18-118012390231-9. We used the equipment Centre of Collective Use of Scientific Equipment (Federal Center for Integrated Arctic Research, Russia).
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Translated by D. Kharitonov
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Bogolitsyn, K.G., Khviyuzov, S.S., Volkov, A.S. et al. Broadband Dielectric Spectroscopy of Lignin. Russ. J. Phys. Chem. 93, 353–358 (2019). https://doi.org/10.1134/S0036024419020055
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DOI: https://doi.org/10.1134/S0036024419020055