Volume : II, Issue : V, May - 2013

Synthesis, and Dielectric Study of Polyaniline / Cr2O3 Composites

Samba Siva Rao Gorthi, Ameena Parveen

Abstract :

The PANI/Cr2 O3  composites have been synthesized with various compositions viz., 05, 10, 15, 20 and 25 wt % of Cr2 O3  in PANI. The ac conductivity was studied in the frequency range 102 – 106 Hz. It is observed from the ac conductivity studies that the ac conductivity is found to be constant up to 105 Hz and there after it increases steeply which is a characteristic feature of disordered materials. The dielectric behavior was also investigated in the frequency range 102 – 106 Hz. It is observed from the dielectric studies the value of dielectric constant increases up to 15 wt % and later it decreases. Similarly the imaginary dielectric constant increases up to 15 wt %, further it decreases rapidly up to 25 wt %. It is seen that the tan δ values increases up to 15 wt % and then decreases thereafter. At higher frequencies these composites exhibit almost zero dielectric loss the dimensions of Cr2 O3 particles in the matrix have a greater influence on the conductivity values and the observed dielectric values.

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Article: Download PDF   DOI : 10.36106/ijsr  

Cite This Article:

Samba Siva Rao Gorthi, Ameena Parveen Synthesis, and Dielectric Study of Polyaniline / Cr2O3 Composites International Journal of Scientific Research, Vol.II, Issue.V May 2013

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