Electrical conductivity of polypyrrole/copolyester composite films prepared from copolyester-FeCl3 surface adsorption

The electrical conductivity of the polypyrrole/(anion containing copolyeste r) composite Films prepared from FeCl3-copolyester surface adsorption was i nvestigated. Copolyester films prepared by dipping in FeCl3 solutions were exposed to pyrrole vapor. FeCl3 solutions were prepared from phenol/TCE and methanol mixtures with three different mixing ratios (phenol/TCE:methanol) , that is, 1:1, 2:1, and 3:1. The composite films prepared from the 3:1 and 2:1 solutions showed higher conductivity than those prepared from the 1:1 solution. The Fe content of the films was found to br closely related to th e conductivity of the composites. The conductivity of the composite films s howed the highest value when DMS, the ionic group, content in the copolyest er was 6 mol% for all the solvent compositions examined.