Microstructure and charge transport in electrically conducting polypyrrole/poly(p-phenylene terephthalamide) composite fibers

L. P. Reactor, D. C. De Groot, J. L. Schindler, Tobin J Marks, S. H. Carr

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Electrically conducting composite polypyrrole/poly(p-phenylene terephthalamide) (PPTA or KevlarR) fibers have been prepared by chemical polymerization of pyrrole within the void structure of never-dried PPTA fibers. The composite morphology has been examined by scanning electron microscopy (SEM) and wide angle x-ray diffraction techniques, which indicate the existence within the fiber interior of a dispersed polypyrrole phase having no preferred direction of orientation. The d.c. conductivity exhibits a temperature dependence characteristic of three-dimensional variable-range hopping in the limit of low temperature; however it begins to diverge from this law at higher temperatures for the more conductive samples. The temperature dependence of the composite fiber thermopower can be understood in terms of the model proposed by Kaiser.

Original languageEnglish
Pages (from-to)935-939
Number of pages5
JournalSynthetic Metals
Volume41
Issue number3
DOIs
Publication statusPublished - May 6 1991

Fingerprint

fiber composites
polypyrroles
Polypyrroles
Charge transfer
conduction
microstructure
Microstructure
fibers
Fibers
Composite materials
temperature dependence
composite materials
pyrroles
Temperature
Pyrroles
voids
Thermoelectric power
x ray diffraction
polymerization
conductivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics

Cite this

Microstructure and charge transport in electrically conducting polypyrrole/poly(p-phenylene terephthalamide) composite fibers. / Reactor, L. P.; De Groot, D. C.; Schindler, J. L.; Marks, Tobin J; Carr, S. H.

In: Synthetic Metals, Vol. 41, No. 3, 06.05.1991, p. 935-939.

Research output: Contribution to journalArticle

Reactor, L. P. ; De Groot, D. C. ; Schindler, J. L. ; Marks, Tobin J ; Carr, S. H. / Microstructure and charge transport in electrically conducting polypyrrole/poly(p-phenylene terephthalamide) composite fibers. In: Synthetic Metals. 1991 ; Vol. 41, No. 3. pp. 935-939.
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