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Conduction mechanism in H‐type polysiloxane‐polypyrrole block copolymers
Author(s) -
Bozkurt A.,
Parlak M.,
Erçelebi Ç.,
Toppare L.
Publication year - 2002
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.10567
Subject(s) - polypyrrole , copolymer , pyrrole , materials science , polymer chemistry , electrolyte , dopant , scanning electron microscope , monomer , conductive polymer , sulfonate , atmospheric temperature range , conductivity , chemical engineering , polymer , doping , chemistry , sodium , composite material , polymerization , electrode , organic chemistry , physics , optoelectronics , meteorology , engineering , metallurgy
Conducting polymers of polysiloxane‐polypyrrole were synthesized by electropolymerization of the pyrrole monomer through pyrrole moieties in N ‐pyrrole‐terminated polysiloxanes. Sodium paratoluene sulfonate was used as the electrolyte. Scanning electron microscopy (SEM) was used to determine the surface morphology of the films. The room‐temperature conductivity values of the films were found to be in the range of 1.9–4.4 × 10 −4 (Ω cm) −1 , depending on the supporting electrolyte concentration. The temperature dependence of the dc conductivities of the copolymers having different dopant concentrations was investigated within the temperature range of 100–320 K. The evaluated parameters showed that the electrical transport is dominated by variable range hopping. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 52–56, 2002