Abstract
The influence of the molecular weight and the content of sulfate groups of sulfated poly(β-hydroxyethers) (S-PHE), used as dopants for polypyrrole, 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 sulfation. Electrochemical experiments showed a superiority of PPy/S-PHE in charge-discharge kinetics and practical charge capacity compared to polypyrrole/poly(styrenesulfonate) films.
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