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Synthesis, characterization and conductivity measurements of polyaniline and polyaniline/fly‐ash composites
Author(s) -
Narayan Himanshu,
Alemu Hailemichael,
Iwuoha Emmanuel
Publication year - 2006
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200622304
Subject(s) - polyaniline , thermogravimetric analysis , conductivity , materials science , scanning electron microscope , fly ash , composite material , polymerization , in situ polymerization , microstructure , chemical engineering , atmospheric temperature range , electrical resistivity and conductivity , analytical chemistry (journal) , chemistry , polymer , organic chemistry , thermodynamics , physics , engineering , quantum mechanics
Polyaniline (PANI) and polyaniline/fly ash (PANI/FA) composites with various concentrations of fly ash (20%, 40% and 50%) were synthesized by the process of in‐situ polymerization. The samples were characterized by powder X‐ray diffraction, thermogravimetric analysis, infrared spectroscopy, and scanning electron microscopy. Moreover, the dc conductivity of the samples was measured as a function of temperature in the range 80–290 K and it was found that the addition of FA decreases the conductivity. The temperature dependence of the dc conductivity for PANI and FA/PANI composites has been explained on the basis of the quasi one‐dimensional variable hopping model. A very good agreement was found between the experimental data and the theory. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)