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Electrical Properties Investigation in PA12/PANI Composites
Author(s) -
Mezdour Dounia zed,
Tabellout Mohamed,
Sahli Salah,
Fatyeyeva Kateryna
Publication year - 2010
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201050402
Subject(s) - materials science , composite material , percolation threshold , conductivity , electrical resistivity and conductivity , volume fraction , percolation (cognitive psychology) , polyaniline , dielectric , doping , percolation theory , polymerization , polymer , chemistry , optoelectronics , neuroscience , electrical engineering , biology , engineering
Summary: Volume conducting PA‐12 based composites powders were chemically prepared by in situ polymerization and aniline doping at room temperature. These kinds of polyamide / PANI composites were investigated regarding their electrical properties. Their ac and dc electrical properties measured in the frequency range of 10 −2 –10 7 Hz are reported and the frequency dependence of electrical conductivity was investigated as a function of PANI concentration leading to the determination of the conductivity. The experimental conductivity was found to increase continuously with PANI content and explained by percolation theory with a relatively low percolation threshold of about 0.4 wt.%. The dielectric behavior of various PANI polymer composites has been characterized by the critical frequency ω c (denoting the crossover from the dc plateau of the conductivity to its frequency dependent ac behaviour). Modelling the conductivity behavior versus volume fraction using Slupkowski approach has revealed that the considered parameters are not sufficient to describe the electrical conductivity behavior.