Impedance analysis of Sodium alginate : Graphene oxide composite

International Conference on Advances in Materials and Manufacturing Applications 2017

Mohan Kumar, T.M.^1 ; Praveen, D.^2

Department of Chemistry, Amrita University, Bengaluru, India^1

Department of Physics, Amrita University, Bengaluru, India^2

关键词: Composite pellets;    High frequency HF;    Impedance analysis;    Impedance data;    Nitrogen atmospheres;    Oxide composites;    Thermally stable;    Varying temperature;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/310/1/012150/pdf
DOI  :  10.1088/1757-899X/310/1/012150

来源: IOP

【 摘 要 】

Sodium alginate (SA) and graphene oxide (GO) composite pellets are prepared by one step simple procedure. The composites are found to be thermally stable up to 220°C in nitrogen atmosphere. The composite was studied for impedance analysis with varying temperature ranging from room temperature to 170°C. Dielectric constant of the samples was measured using the impedance data using standard formulae. It was found that the dielectric constant of the composites is high at low frequencies which may be due to the contribution from all the dipoles responding to the applied signal. However, at high frequencies, may be due to non-participating dipoles, the dielectric constant of the composites is lower.