Conductivity and thermopower of blends of polyaniline with insulating polymers (PETG and PMMA)

C. K. Subramaniam, A. B. Kaiser, P. W. Gilberd, Chia-Jyi Liu, B. Wessling

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

We have measured the temperature dependence of the conductivity and thermoelectric power of conducting polyaniline (PAni) dispersed in PETG copolyester and in poly(methylmethacrylate) (PMMA). Near room temperature, the PAni/PMMA blends (like unblended PAni) show a change to metallic sign for the conductivity temperature dependence, whereas this sign change does not occur for the PAni/PETG blends. As temperature decreases, the PAni/PMMA blends show a much smaller decrease of conductivity than the PAni/PETG blends and even unblended PAni. A simple model involving metallic conduction in addition to tunnelling between metallic particles can give a good account of all the conductivity data. The thermopower of all the blends is small and increases as temperature increases.

Original languageEnglish
Pages (from-to)235-238
Number of pages4
JournalSolid State Communications
Volume97
Issue number3
DOIs
Publication statusPublished - 1996 Jan 1

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Methylmethacrylate
Thermoelectric power
Polyaniline
Polymers
conductivity
polymers
conduction
temperature dependence
Temperature
polyaniline
phenylethylthio-beta-galactopyranoside
temperature
room temperature

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

Subramaniam, C. K. ; Kaiser, A. B. ; Gilberd, P. W. ; Liu, Chia-Jyi ; Wessling, B. / Conductivity and thermopower of blends of polyaniline with insulating polymers (PETG and PMMA). In: Solid State Communications. 1996 ; Vol. 97, No. 3. pp. 235-238.
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Conductivity and thermopower of blends of polyaniline with insulating polymers (PETG and PMMA). / Subramaniam, C. K.; Kaiser, A. B.; Gilberd, P. W.; Liu, Chia-Jyi; Wessling, B.

In: Solid State Communications, Vol. 97, No. 3, 01.01.1996, p. 235-238.

Research output: Contribution to journalArticle

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AB - We have measured the temperature dependence of the conductivity and thermoelectric power of conducting polyaniline (PAni) dispersed in PETG copolyester and in poly(methylmethacrylate) (PMMA). Near room temperature, the PAni/PMMA blends (like unblended PAni) show a change to metallic sign for the conductivity temperature dependence, whereas this sign change does not occur for the PAni/PETG blends. As temperature decreases, the PAni/PMMA blends show a much smaller decrease of conductivity than the PAni/PETG blends and even unblended PAni. A simple model involving metallic conduction in addition to tunnelling between metallic particles can give a good account of all the conductivity data. The thermopower of all the blends is small and increases as temperature increases.

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