Electrical transport properties of poly(aniline-co-p-phenylenediamine) and its composites with incorporated silver particles

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• 作者：Robert Moucka (1351) (2351)
  Miroslav Mrlik (1351) (2351)
  Marketa Ilcikova (3351)
  Zdenko Spitalsky (4351)
  Natalia Kazantseva (1351) (2351)
  Patrycja Bober (5351)
  Jaroslav Stejskal (5351)
  
• 关键词：polyaniline ; p ; phenylenediamine ; poly(p ; phenylenediamine) ; copolymer ; silver particles ; dielectric properties ; conductivity
• 刊名：Chemical Papers
• 出版年：2013
• 出版时间：August 2013
• 年：2013
• 卷：67
• 期：8
• 页码：1012-1019
• 全文大小：541KB
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• 作者单位：Robert Moucka (1351) (2351)
  Miroslav Mrlik (1351) (2351)
  Marketa Ilcikova (3351)
  Zdenko Spitalsky (4351)
  Natalia Kazantseva (1351) (2351)
  Patrycja Bober (5351)
  Jaroslav Stejskal (5351)
  
  1351. Centre for Polymer Systems, University Institute, Tom谩拧 Ba钮a University in Zl铆n, Nad Ov膷铆rnou 3685, 760 01, Zl铆n, Czech Republic
  2351. Polymer Centre, Faculty of Technology, Tom谩拧 Ba钮a University in Zl铆n, T. G. Masaryk Sq. 275, 762 72, Zl铆n, Czech Republic
  3351. Centre of Excellence SAS for Functionalized Multiphase Materials (FUN-MAT), Polymer Institute, Slovak Academy of Sciences, D煤bravsk谩 cesta 9, 845 41, Bratislava, Slovakia
  4351. Polymer Institute, Slovak Academy of Sciences, D煤bravsk谩 cesta 9, 845 41, Bratislava, Slovakia
  5351. Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsk媒 Sq. 2, 162 06, Prague 6, Czech Republic
  
• ISSN：1336-9075

文摘

Statistical copolymers of aniline and p-phenylenediamine, poly(aniline-co-p-phenylenediamine)s, were synthesised by oxidative polymerisation using various oxidants, ammonium peroxydisulphate or silver nitrate. Depending on the choice of oxidant, copolymers or composites with silver particles were obtained. Different molar concentrations of p-phenylenediamine in the reaction mixture provided materials of different conductivities. The influence of both the copolymer composition and the presence of discrete silver particles on the electric and dielectric properties of the system was studied. The results showed a decrease in the conductivity of copolymers and their composites with the silver content compared with the content of standard polyaniline salt. The reduction in conductivity was described in terms of the decreased density of hopping centres due to defects in the copolymer structure. The dielectric relaxations observed were described in terms of their activation energies and were linked to the corresponding conduction mechanism.