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 |
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Pages (from-to) | 235-238 |
Number of pages | 4 |
Journal | Solid State Communications |
Volume | 97 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1996 Jan |
All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry