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Journal of Physical Studies 22(4), Article 4701 [7 pages] (2018)
DOI: https://doi.org/10.30970/jps.22.4701 DIELECTRIC PROPERTIES OF AQUEOUS CELLULOSE NANOCRYSTALS AND NANOFIBERS SUSPENSIONSOleh Hrebnov, Lyudmila Matzui, Leonid Bulavin
Taras Shevchenko National University of Kyiv, |
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Dielectric properties of hydrophobic nanoparticles suspensions are intensively investigated nowadays. However, few works investigate suspensions of hydrophilic nanoparticles. In the present work, we investigate the influence of hydrophilic cellulose nanocrystals (CNCs) and cellulose nanofibers (CNFs) on the dielectric properties of aqueous suspensions. Purity and chemical composition of the nanoparticles was characterized by EDX and FTIR spectroscopy. The results of dielectric measurements show a decrease in the relaxation time of the CNCs aqueous suspension, as compared with that of pure water; no significant change in the relaxation time was observed for the CNFs aqueous suspension. The findings indicate that a hydrophilic surface may accelerate the dynamics of water molecules.
PACS number(s): 77.22.-d