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 language | English |
|---|---|
| Pages (from-to) | 235-238 |
| Number of pages | 4 |
| Journal | Solid State Communications |
| Volume | 97 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1996 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry
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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 journal › Article
TY - JOUR
T1 - Conductivity and thermopower of blends of polyaniline with insulating polymers (PETG and PMMA)
AU - Subramaniam, C. K.
AU - Kaiser, A. B.
AU - Gilberd, P. W.
AU - Liu, Chia-Jyi
AU - Wessling, B.
PY - 1996/1/1
Y1 - 1996/1/1
N2 - 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.
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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U2 - 10.1016/0038-1098(95)00653-2
DO - 10.1016/0038-1098(95)00653-2
M3 - Article
VL - 97
SP - 235
EP - 238
JO - Solid State Communications
JF - Solid State Communications
SN - 0038-1098
IS - 3
ER -