PT/BORAX COMPOSITE AS A HIGH DIELECTRIC CONSTANT MATERIAL WITH LOWER DIELECTRIC LOSS

Authors : Mehmet Kılıç, Yaşar Karabul, Zeynep Güven Özdemir, Orhan İçelli

Pages : 1089-1097

Doi:10.18038/aubtda.291255

View : 16 | Download : 11

Publication Date : 2017-12-31

Article Type : Research Paper

Abstract :In recent years, high dielectric constant composites have been considered as the key materials for many cutting-edge applications such as supercapacitors, memory devices, electrical, mechanical, and biochemical engineering. However, the high dielectric loss at low frequencies become a crucial problem which makes the composite unsuitable for these technological applications. In this respect, this work has been devoted to prepare a new high dielectric constant composite material with low dielectric loss. From this point of view, Polythiophene /Na₂B₄O₇ insert ignore into journalissuearticles values(PT/Borax); composites with different borax contents varying from 10.0 wt.% to 50.0 wt.% have been prepared. The morphology and chemical structure of the composites as well as pure PT have been determined by Scanning Electron Microscopy insert ignore into journalissuearticles values(SEM); and Fourier Transformed Infrared insert ignore into journalissuearticles values(FTIR); Spectroscopy, respectively. The dielectric properties of the samples have been measured within 100Hz-16.5MHz frequency region at room temperature. The polymer composite with high dielectric constant and low dielectric loss at low frequency for various technological applications has been achieved for 50.0 wt.% Borax additive. The dielectric relaxation mechanism of the samples have also been identified as non-Debye type. The electrical conductivity properties of the samples have also been discussed in terms of Jonscher’s Universal power law.
Keywords : High dielectric constant, low dielectric loss, polymer composites, polythiophene, borax