Revisiting the electrochemical and polymeric behavior of a polypyrrole free-standing electrode in aqueous solution

Article Abstract:

A homogeneous free-standing polypyrrole electrode is developed and a revisit to the electrochemical behavior and stability inaqueous solutions of thick free-standing polypyrrole films, which are suitable for different electrochemical devices is presented. The film thickness ranges between 10 and 20 um, according to the results obtained from polymerization parameters and the film density.

Semiconductors and related devices, Semiconductor and Related Device Manufacturing, Thin Film Materials, Electric properties, Thin films, Dielectric films

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Partitioning and polymerization of pyrrole into perfluorosulfonate (Nafion) membranes under neutral conditions

Article Abstract:

The effect of the Nafion counterion on the properties of the polypyrrole/Nafion composites formed by subsequent polymerization of pyrrole with Fe (III) is investigated. The use of neutral Nafion for the preparation of polypyrrole-modified membranes for direct methanol fuel cells has been shown to have significant advantages over the use of H-Nafion.

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Partitioning and polymerization of pyrrole into perfluorosulfonic acid (nafion) membranes

Article Abstract:

Three types of processes are examined, namely, monomer loading, polymerization and removal of unreacted monomers. It is observed that these processes are affected by the presence of oxygen and are photosensitive. A variety of oxidizing agents are used to effect polymerization including Fe(super 3+), H2O2, ammonium persulfate, and UV irradiation.

Petroleum Refineries, Petroleum refining, Polymerization, Analysis, Oxidation-reduction reaction, Oxidation-reduction reactions, Addition polymerization, Chemical properties

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