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Influence of processing parameters on the electric conductivity and on the mechanical properties of thick polypyrrole films
Author(s) -
Pini Niccolò,
Siegrist Mathias,
Busato Stephan,
Ermanni Paolo
Publication year - 2007
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.20738
Subject(s) - polypyrrole , materials science , ultimate tensile strength , conductivity , sulfonic acid , polymer , composite material , modulus , electrical resistivity and conductivity , polymerization , pyrrole , young's modulus , polymer chemistry , organic chemistry , chemistry , electrical engineering , engineering
The electric conductivity and the mechanical properties of electrochemically synthesized polypyrrole/p‐toluene sulfonic acid (PPy/pTSA) as a function of its processing parameters were investigated. The influence of polymerization current density, pyrrole concentration, and counter ion concentration on the electric conductivity of thick (≫100 μm) polymer films was examined and the electric conductivity was found to be in a range between 1.6 and 97 S · cm −1 . Analysis of the polymer's chemical composition delivered a result in agreement with literature data of one counter ion for every 2.97 pyrrole rings for the best conducting samples. In mechanical tests, maximum values for Young's modulus, tensile strength, and elongation at break, were found to be 4.0 GPa, 72.6 MPa, and 11.2%, respectively. POLYM. ENG. SCI., 47:662–666, 2007. © 2007 Society of Plastics Engineers.