Synthesis, Characterization and Enhanced Electrical Properties of Polyaniline-Tungsten Oxide Composites by in-situ Polymerization Technique

Author:

Manjunatha B1ORCID,Shweta.C.Gumma 2,Nagajyoti 3,Rahul Jabnoor4,SunilKumar A5,Sangshetty Kalyane6,Anilkumar G.Bidve7

Affiliation:

1. Department of Physics, Gulbarga University Kalaburagi PG Center Raichur, Karnataka, India

2. 2. Department of Physics, Appa Institute of Engineering & Technology, Kalaburagi, Karanataka

3. 4. Department of Physics, Bheemanna Khandre Institute of Technology, Bhalki,

4. Department of Physics, Bheemanna Khandre Institute of Technology, Bha

5. Department of Physics, Ballari institute of technology and management, Ballari

6. 6. Professor, Department of Physics, Bheemanna Khandre Institute of Technology, Bhalki, Karanataka, India

7. 7. Professor, Department of Physics, Appa Institute of Engineering & Technology, Kalaburagi, Karanataka, India

Abstract

Abstract The conducting polyaniline (PANI) and PANI doped with tungsten oxide (WO3) with varying wt% of WO3 are prepared by using in-situ chemical oxidative polymerization method. The X-ray diffraction it clearly reveals that pure PANI is amorphous whereas PANI/WO3 composites are in crystalline in nature. The electrical conductivity studied by four probe technique at 30–200°C. All the composites showed increase in conductivity values with the increase in WO3 content where the composite with 45% WO3 content showed highest value of 0.12 S/cm while the lowest conductivity of 0.06 S/cm was found in 5% WO3 content composite. The dielectric constant shows unusual response with respect to frequency with very high dielectric constant of 4.191X103 at 3X106 Hz for 45 wt% of WO3 in PANI, which attributes to the stronger localization of charge carriers and electrical relaxation processes.

Publisher

Research Square Platform LLC

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