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Characterization of conductive multiwall carbon nanotube/polystyrene composites prepared by latex technology |
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| Authors: | Junrong Yu Kangbo Lu Erwan Sourty Nadia Grossiord Cor E Koning Joachim Loos |
| Affiliation: | a State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 200051, PR China b Laboratory of Materials and Interface Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands c Dutch Polymer Institute, 5600 AX Eindhoven, The Netherlands d Applications Laboratory, FEI Company BV, 5600 KA Eindhoven, The Netherlands e Laboratory of Polymer Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands f Laboratory of Polymer Technology, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands |
| Abstract: | Conductive multiwall carbon nanotube/polystyrene (MWCNT/PS) composites are prepared based on latex technology. MWCNTs are first dispersed in aqueous solution of sodium dodecyl sulfate (SDS) driven by sonication and then mixed with different amounts of PS latex. From these mixtures MWCNT/PS composites were prepared by freeze-drying and compression molding. The dispersion of MWCNTs in aqueous SDS solution and in the PS matrix is monitored by UV–vis, transmission electron microscopy, electron tomography and scanning electron microscopy. When applying adequate preparation conditions, MWCNTs are well dispersed and homogeneously incorporated in the PS matrix. The percolation threshold for conduction is about 1.5 wt% of MWCNTs in the composites, and a maximum conductivity of about 1 S m−1 can be achieved. The approach presented can be adapted to other MWCNT/polymer latex systems. |
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