Sulfonated polyoxadiazole composites containing carbon nanotubes prepared via in situ polymerization |
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Authors: | Dominique Gomes Marcio R. Loos Malte H.G. Wichmann Alejandra de la Vega Karl Schulte |
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Affiliation: | 1. GKSS Research Center Geesthacht GmbH, Institute of Materials Research, Max Planck Str. 1, D-21502 Geesthacht, Germany;2. Technische Universität Hamburg-Harburg, Institute of Polymers and Composites, Denickestrasse 15, D-21073 Hamburg, Germany |
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Abstract: | In the present work, in situ polymerizations of sulfonated polyoxadiazole through a polycondensation reaction of A–A (hydrazine sulphate) and B–B (aromatic dicarboxylic acid) monomers with carbon nanotubes in poly(phosphoric acid) were performed. The structures of composites were characterized by elemental analysis, Raman and FTIR spectroscopy. The sulfonated polyoxadiazole composites with high molecular weight (in the order of magnitude of 105 g/mol) are soluble in organic solvents and can be cast as dense films. They exhibit good mechanical properties (storage modulus up to around 4 GPa at 300 °C) and an electrical conductivity in the order of 10−5 S m−1. The composites can be used at temperatures as high as 470 °C. |
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Keywords: | A. Polymers A. Polyoxadiazole E. In situ polymerization A. Carbon nanotubes A. Nanocomposites |
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