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Synthesis and Characterization of Conductive Polypyrrole with Improved Conductivity and Processability by Tzong-Ming Wu; Hsiang-Ling Chang; Yen-Wen Lin is a Materials Science article available to read on EtoBox.

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## Abstract **BACKGROUND:** The solubility and conductivity of chemically synthesized polypyrrole (PPy) are dependent on the synthesis procedure and composition. Enhanced processability of PPy with high conductivity can be achieved using the anionic polyelectrolyte poly(styrene sulfonate) (PSS). **RESULTS:** High‐conductivity PPy with better processability was successfully synthesized by __in situ__ chemical oxidation polymerization using various concentrations of PSS. Elemental analysis results show that the C/S and N/S molar ratios of the PPy fabricated in the presence of PSS are in good agreement with theoretical values for PPy–SO~4~. The S/N ratio increases with increasing PSS content, indicating the high doping level for PPy as the PSS content increases. Scanning electron microscopy and high‐resolution transmission electron microscopy images show that the fabricated PPy has spherical structures with the average particle size for the pure PPy being about 250 nm and markedly decreasing to 20–40 nm with the addition of PSS. **CONCLUSION:** The conductivities of PPy synthesized with a PSS/pyrrole monomer weight ratio of 0.25 are about five times higher than that of PPy matrix. The

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Author

Tzong-Ming Wu; Hsiang-Ling Chang; Yen-Wen Lin

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0959-8103)

Published

2009

Language

EN

Field

Materials Science (Physical Sciences)