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Electroactive mixtures of polyaniline and EPDM rubber: Chemical, thermal, and morphological characterization
Author(s) -
Domenech S. C.,
Bortoluzzi J. H.,
Soldi V.,
Franco C. V.
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.11465
Subject(s) - sulfonic acid , materials science , polyaniline , thermogravimetric analysis , maleic anhydride , epdm rubber , natural rubber , polymer chemistry , differential scanning calorimetry , polymerization , chemical engineering , monomer , aniline , conductive polymer , polymer , composite material , copolymer , organic chemistry , chemistry , physics , engineering , thermodynamics
Abstract A new route for blending polyaniline (PAni) and EPDM rubber was devised with maleic anhydride as a compatibilizer precursor. Rubber matrices containing ammonium peroxidisulfate and dodecyl benzene sulfonic acid were cast from organic solvents. Exposure to the monomer vapors allowed the chemical polymerization of aniline. The influence of PAni and the compatibilizer on the thermal properties, chemical structure, electrical conductivity, and morphology of the mixtures was observed with differential scanning calorimetry, thermogravimetric analysis, Fourier transform infrared, in situ conductivity measurements, and optical microscopy. The micrographs showed a good distribution of the PAni complex in the matrix. The use of approximately 2 wt % compatibilizer resulted in chemical interactions between maleic anhydride and the PAni complex formed with dodecyl benzene sulfonic acid, which could enhance the compatibility between the polymers. The obtained blends reached relative electrical conductivity values of up to 9 × 10 −3 S cm −1 . © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 87: 535–547, 2003