CHARACTERIZATION OF THERMOPLASTIC SULFATED POLY(BETA-HYDROXYETHERS) POLYPYRROLE CONDUCTING COMPOSITES/

The influence of the molecular weight and the content of sulfate group s of sulfated poly(beta-hydroxyethers)(S-PHE), used as dopants for pol ypyrrole, on the electrical and mechanical properties has been studied . It was found that the electrical conductivity of PPy/S-PHE decreased with increasing the molecular weight of S-PHE except when S-PHE with a high molar ratio of sulfation (MR) was used. The stretchability was influenced by the molecular weight as well as MR of the polyanions and exceeded 200 % at a high molecular weight and a low molar ratio of su lfation. Electrochemical experiments showed a superiority of PPy/S-PHE in charge-discharge kinetics and practical charge capacity compared t o polypyrrole/poly(styrenesulfonate) films.