Dielectric Properties of PANI/CuO Nanocomposites

International Conference on Advances in Materials and Manufacturing Applications 2017

Ambalagi, Sharanabasamma M.^1 ; Devendrappa, Mahalesh^1 ; Nagaraja, Sannakki^1 ; Sannakki, Basavaraja^1

Department of Post Graduate Studied and Research in Physics, Gulbarga University, Kalaburagi Karnataka

585106, India^1

关键词: Combustion method;    Copper oxide nanoparticles;    Function of frequency;    Higher frequencies;    In-situ polymerization;    Polyanilines (PAni);    Polymer nanocomposite;    Weight percentages;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/310/1/012081/pdf
DOI  :  10.1088/1757-899X/310/1/012081

来源: IOP

【 摘 要 】

The combustion method is used to prepare the Copper Oxide (CuO) nanoparticles. The nanocomposites of Polyaniline (PANI) by doping with copper oxide nanoparticles have synthesized at 10, 20, 30, 40 and 50 different weight percentages during the in-situ polymerization. The samples of nanocomposite of PANI-CuO were characterized by using X-Ray diffraction (XRD) technique. The physical properties such as dielectric constant, dielectric loss and A C conductivity of the nanocomposites are studied as a function of frequency in the range 5Hz-35MHz at room temperature. It is found that the dielectric constant decreases as the frequency increases. The dielectric constant it remains constant at higher frequencies and it is also observed that in particular frequency both the dielectric constant and dielectric loss are decreased as a weight percentage of CuO increased. In case of AC conductivity it is found that as the frequency increases the AC conductivity remains constant up to 3.56MHz and afterwards it increases as frequency increases. This is due to the increase in charge carriers through the hopping mechanism in the polymer nanocomposites. It is also observed that as a weight percentage of CuO increased the AC conductivity is also increasing at a particular frequency.