Synthesis, Electrical Conductivity, and Dielectric Behavior of Polyaniline/V2O5Composites | Zendy

Shama Islam | Zendy; G.B.V.S. Lakshmi | Zendy; Azher M. Siddiqui | Zendy; M. Husain | Zendy; M. Zulfequar | Zendy

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Synthesis, Electrical Conductivity, and Dielectric Behavior of Polyaniline/V₂O₅Composites

Author(s) -

Shama Islam,

G.B.V.S. Lakshmi,

Azher M. Siddiqui,

M. Husain,

M. Zulfequar

Publication year - 2013

Publication title -

international journal of polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.399

H-Index - 33

eISSN - 1687-9430

pISSN - 1687-9422

DOI - 10.1155/2013/307525

Subject(s) - polyaniline , materials science , dielectric , crystallinity , doping , composite material , conductivity , pellets , polymerization , electrical resistivity and conductivity , dielectric loss , conductive polymer , vanadium , band gap , analytical chemistry (journal) , polymer , chemistry , electrical engineering , optoelectronics , organic chemistry , metallurgy , engineering

Conducting polymer composites of polyaniline/vanadium pentaoxide PANI/V 2 O 5 (with different initial weight percentage of V 2 O 5 ) has been synthesized by in situ polymerization method. DC conductivity of compressed pellets has been analyzed in the temperature range 300–550 K and was found to increase with V 2 O 5 doping. This increase in conductivity is mainly due to band conduction. It has also been observed that the dielectric constant and dielectric loss increase with the level of doping of V 2 O 5 but remain independent of the frequency (50 KHz–1 MHz). X-ray diffraction pattern shows some order of crystallinity of composites due to interaction of polyaniline with V 2 O 5 . UV-visible spectroscopy shows an increase in the optical band gap with doping.

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