Dielectric properties of ferroelectric nanocomposites of nanocrystalline cellulose and sodium nitrite

A novel nanocomposite consisting of nanocrystalline cellulose (NCC) and sodium nitrite (NaNO 2 ) was synthesized and its dielectric properties were investigated at the temperature range of 20–170 °C and at the frequency range of 10 −3 –10 6 Hz under low electric fields (1 V cm −1 ). The obtained res...

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Bibliographic Details
Published in:Applied nanoscience 2020-02, Vol.10 (2), p.499-506
Main Authors: Nguyen, Hoai Thuong, Sidorkin, A. S., Milovidova, S. D., Sumets, M.
Format: Article
Language:English
Subjects:
Cellulose
Chemistry and Materials Science
Depolarization
Dielectric properties
Electric fields
Ferroelectric materials
Ferroelectricity
Frequency ranges
Inclusions
Materials Science
Membrane Biology
Nanochemistry
Nanocomposites
Nanocrystals
Nanotechnology
Nanotechnology and Microengineering
Original Article
Phase transitions
Sodium nitrite
Synthesis
Transition temperature
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Summary:A novel nanocomposite consisting of nanocrystalline cellulose (NCC) and sodium nitrite (NaNO 2 ) was synthesized and its dielectric properties were investigated at the temperature range of 20–170 °C and at the frequency range of 10 −3 –10 6 Hz under low electric fields (1 V cm −1 ). The obtained results manifest a reduction in the phase transition temperature of the synthesized composite (110 °C) compared to those of bulk NaNO 2 (164 °C) due to the tilting action of the depolarizing field on the polarization for NaNO 2 inclusions resulting from the presence of the bound charges on their surfaces. In addition, a significant dispersion of dielectric permittivity was detected and the explanation for this was based on the Maxwell–Wagner–Sillars relaxation mechanism.
ISSN:2190-5509
2190-5517
DOI:10.1007/s13204-019-01131-0