Environmentally stable conductive polymers from bis(ethynylstyryl) benzene monomers
Several completely conjugated, all‐carbon–hydrogen acetylene‐terminated monomers, bis(ethynylstyryl)benzenes, were synthesized using the Wittig reaction with ethynyl‐benzaldehyde and xylyldiphosphonium salts. These prepolymers were thermally polymerized in the melt phase into thermally stable materi...
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Veröffentlicht in: | Journal of applied polymer science 1992-01, Vol.44 (3), p.387-399 |
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Hauptverfasser: | , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Several completely conjugated, all‐carbon–hydrogen acetylene‐terminated monomers, bis(ethynylstyryl)benzenes, were synthesized using the Wittig reaction with ethynyl‐benzaldehyde and xylyldiphosphonium salts. These prepolymers were thermally polymerized in the melt phase into thermally stable materials that can be further processed into conductive polymers having high stability to aggressive environments. Conductivity can range from that of an insulator to 10+2 s/cm. The room temperature conductivity is unchanged by extended exposure to boiling water or 500°C in an inert atmosphere. With proper design of the monomers' structures, they will melt sufficiently below the polymerization temperature to provide an adequate time in the liquid state for ease of processing. Once cured into the solid form, the materials are intractable and exhibit high stability to aggressive environments. |
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ISSN: | 0021-8995 1097-4628 |
DOI: | 10.1002/app.1992.070440303 |