Bulletin of materials science | |
Synthesis, characterization and low frequency a.c. conduction of polyaniline/fly ash composites | |
M Revanasiddappa2  M V N Ambika Prasad3  S C Raghavendra1  Syed Khasim3  A B Kulkarni1  | |
[1] Department of Applied Electronics, Gulbarga University, Gulbarga 585 106, India$$Department of Applied Electronics, Gulbarga University, Gulbarga 585 106, IndiaDepartment of Applied Electronics, Gulbarga University, Gulbarga 585 106, India$$;Department of Chemistry, Gulbarga University, Gulbarga 585 106, India$$Department of Chemistry, Gulbarga University, Gulbarga 585 106, IndiaDepartment of Chemistry, Gulbarga University, Gulbarga 585 106, India$$;Department of Physics, Gulbarga University, Gulbarga 585 106, India$$Department of Physics, Gulbarga University, Gulbarga 585 106, IndiaDepartment of Physics, Gulbarga University, Gulbarga 585 106, India$$ | |
关键词: Conductivity; polarons; polyaniline; fly ash.; | |
DOI : | |
学科分类:材料工程 | |
来源: Indian Academy of Sciences | |
【 摘 要 】
in situ polymerization of aniline was carried out in the presence of fly ash (FA) to synthesize polyaniline/fly ash (PANI/FA) composites. The PANI/FA composites have been synthesized with various compositions (15, 20, 30 and 40 wt%) of FA in PANI. The composites, thus synthesized have been characterized by infrared spectroscopy and X-ray diffraction. The morphology of these samples was studied by scanning electron microscopy. Further the a.c. conductivity of these composites have been investigated in the frequency range 102�??106 Hz. The presence of polarons and bipolarons are made responsible for frequency dependence of a.c. conductivity in these composites. The Cole�?�Cole plots indicate clear shift in the distribution of relaxation times as the wt% of FA in PANI changes. These composites show almost symmetric semicircles of Cole�?�Cole plots indicating the Debye-type relaxation in their polarization response.
【 授权许可】
Unknown
【 预 览 】
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