Electrosynthesis and study of some physical properties of conductive and solid-state gas sensing polydiphenylamine
作者： A. Boukhachem , A. Yumak , S. Krichen , A. Madani , M. Abderrabba
DOI: 10.1016/J.SNA.2015.03.045
关键词:
摘要: Abstract Polydiphenylamine was prepared using electrochemical oxidation of the corresponding monomer diphenylamine in an acetonitrile solution containing sodium perchlorate (NaClO 4 ) and characterized spectroscopically. First, some physical characterization infrared (FTIR) measurement shows that this material has a polymeric structure. Moreover, Differential Scanning Calorimetry (DSC) thermal gravimetric analysis (TAG) showed good stability at temperatures above 200 °C. Second, electrical conductivity dielectric properties polydiphenylamine were studied as guides for sensing performance impedance spectroscopy technique frequency range 5 Hz–13 MHz various (118–150 °C). DC is thermally activated with activation energy around 0.65 eV. On other hand AC investigated through Jonscher law. The imaginary part complex maximum whose relaxation increases temperature according to Arrhenius Finally, Values constants ɛ 1 2 calculated.
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