The incorporation of single-walled carbon nanotubes into polymerized high internal phase emulsions to create conductive foams with a low percolation threshold |
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| Authors: | Marie Claire Hermant Maarten Verhulst Andriy V Kyrylyuk Bert Klumperman Cor E Koning |
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| Affiliation: | 1. Department of Polymer Chemistry, Technische Universiteit Eindhoven, P.O. Box 513, 5600 MB Eindhoven, Netherlands;2. Theoretical and Polymer Physics Group, Technische Universiteit Eindhoven, P.O. Box 513, 5600 MB Eindhoven, Netherlands;3. Department of Chemistry and Polymer Science, Stellenbosch University, Private Bag X1, 7600 Matieland, South Africa |
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| Abstract: | New methods for the incorporation of single-walled carbon nanotubes (SWCNTs) into styrene-divinylbenzene-based high internal phase emulsions (HIPEs) are addressed with specific attention to minimizing the SWCNT loading while maintaining a high level of conductivity of the final polyHIPE–SWCNT composites. Stable HIPEs were achieved using sodium dodecyl sulfate-stabilized SWCNTs, thus eliminating the necessity of SWCNT functionalization. PolyHIPE–SWCNT composites were made with water: oil ratios (vol/vol) of 75:25 and of 84:16. The percolation threshold was determined to be 0.2 and 0.1 wt%, respectively. These threshold values are lower than that obtained for non-porous, polystyrene–SWCNT composites made by means of a latex-based route followed by melt-processing. |
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| Keywords: | A Carbon nanotubes A Nanocomposites B Electrical properties |
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