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Influence of Gamma Irradiation on Properties of Ferroelectric Composite from Cellulose Nanoparticles and Triglycine Sulfate

Authors: 

Mai Bich Dung, Hoai Thuong Nguyen*

Source title: 
Materials Transactions, 60(9): 1902-1907, 2019 (ISI)
Academic year of acceptance: 
2019-2020
Abstract: 

The present work is devoted to comparative study on electrophysical properties of non-irradiated and gamma-irradiated ferroelectric composites synthesized from triglycine sulfate and cellulose nanoparticles. The investigation of phase transition indicated that depending on composition weight ratio, the phase transition temperature of non-irradiated samples increased by 3 to a few tens of celcius degrees higher than those for single crystal TGS (+49oC), while the characteristic relaxation frequencies were lower. Besides, two areas of linear dispersion and Debye-like relaxation were detected in the studied frequency range. Under the influence of gamma irradiation, the phase transition temperature and characteristic relaxation frequencies decreased as compared to those of the non-irradiated samples. The stated anomalies can be explained by the interaction between cellulose nanoparticles and triglycine sulfate inclusion through hydrogen bonds, and by the defects created by gamma irradiation.

 

a
Crystalline structure and functional groups features for non-irradiated and γ-irradiated samples of TGS, cellulose nanoparticles and composite 0.5CNP+0.5TGS. (a) XRD patterns and (b) FTIR spectra.