Abstract
In this study, a novel ferroelectric composite consisting of triglycine sulfate (TGS) and cellulose nanoparticles (NCCP) prepared from waste cotton was synthesized and characterized by X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Zetasizer analyzer. The study on electrophysical properties of the composite were performed from 25 to 120 ˚C under a weak electric field with an amplitude of 1 V/cm at low and infra-low frequencies (10−3 to 103 Hz) with different weight composition ratios. The obtained results indicated that the increase in cellulose concentration in the composite led to increasing the phase transition temperature in TGS component by 3 to 63 °C higher than those for single crystal TGS (+49 °C). The corresponding increase of the Curie temperature in composites was presumably connected with the strong interaction between TGS and cellulose nanoparticles through the system of hydrogen bonds. In the temperature range 100–115 °C, where the structural changes in pure triglycine sulfate were recorded earlier in the case of high-temperature annealing, a characteristic growth of the dielectric permittivity was also observed. The study on low and infra-low dispersion of dielectric permittivity was carried out and explained by Maxwell-Wagner-Sillars interfacial mechanism.
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