Partitioning and Polymerization of Pyrrole into Perfluorosulfonic Acid (Nafion) Membranes
Details of Nafion/polypyrrole composite formation have been obtained using electronic absorption spectroscopy. Three distinct processmonomer loading, polymerization, and removal of unreacted monomerhave been studied. Pyrrole loading displays a square root dependence on time, indicative of a diffus...
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Published in | The journal of physical chemistry. B Vol. 107; no. 11; pp. 2480 - 2484 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
American Chemical Society
20.03.2003
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Online Access | Get full text |
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Summary: | Details of Nafion/polypyrrole composite formation have been obtained using electronic absorption spectroscopy. Three distinct processmonomer loading, polymerization, and removal of unreacted monomerhave been studied. Pyrrole loading displays a square root dependence on time, indicative of a diffusion controlled partitioning process. Partitioning of pyrrole into Nafion, however, is complicated by protonation of pyrrole and acid-catalyzed oxidation to give oligomeric and polymeric species. These processes are affected by the presence of oxygen and are photosensitive. A variety of oxidizing agents have been used to effect polymerization including Fe3+, H2O2, ammonium persulfate, and UV irradiation. |
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Bibliography: | istex:314E110DFF8E8EE5BCE819A918905381DAF2A4EE ark:/67375/TPS-G287NF6B-P |
ISSN: | 1520-6106 1520-5207 |
DOI: | 10.1021/jp026840c |