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Melt processing of composites of PVDF and carbon black modified with conducting polymers
Author(s) -
Zucolotto V.,
Avlyanov J.,
Gregorio R.,
Mattoso L. H. C.
Publication year - 2004
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.20952
Subject(s) - materials science , carbon black , composite material , thermogravimetric analysis , polypyrrole , polyaniline , conductive polymer , polymer , quenching (fluorescence) , chemical engineering , polymerization , engineering , natural rubber , physics , quantum mechanics , fluorescence
Conductive composites from poly(vinylidene fluoride) (PVDF) and a novel thermally stable conductive additive made via in situ deposition of polyaniline or polypyrrole on carbon black particles were produced by a melting process. Electrical conductivity in the order of 10 −2 S/cm could be achieved with low contents of the conductive filler. Thermogravimetric analysis (TGA) showed that there is no appreciable degradation of the composites at temperatures as high as 300°C. Moreover, the addition of the conducting polymer‐modified carbon black additive is advantageous to the melt processing of the composites, reducing the melt viscosity in comparison to the addition of pure carbon black. Composites containing the β‐phase of PVDF could be obtained via quenching from the melt, as indicated by X‐Ray diffraction analysis. The type and amount of the additive and the quenching rate influence the formation of β‐phase in the PVDF composites. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 553–557, 2004