期刊
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
卷 67, 期 7, 页码 1496-1501出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2006.01.100
关键词
polymers; X-ray diffraction; dielectric properties; electrical conductivity
Polyaniline is chemically synthesised and doped with camphor sulphonic acid. FTIR studies carried out on these samples indicate that the aromatic rings are retained after polymerisation. The percentage of crystallinity for polyaniline doped with camphor sulphonic acid has been estimated from the X-ray diffraction studies and is around 56% with respect to polyaniline emeraldine base. The change in dielectric permittivity with respect to temperature and frequency is explained on the basis of interfacial polarisation. AC conductivity is evaluated from the observed dielectric permittivity. The values of AC and DC conductivity and activation energy are calculated, The activation energy values suggested that the hopping conduction is the prominent conduction mechanism in this system. (c) 2006 Elsevier Ltd. All rights reserved.
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