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Preparation and properties of multi-walled carbon nanotube/carbon/polystyrene composites |
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| Authors: | Lijun Ji Molly M. Stevens Qianming Gong Ji Liang |
| Affiliation: | a Key Laboratory for Advanced Materials Processing Technology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, People’s Republic of China b Department of Materials and Institute for Biomedical Engineering, Imperial College London, South Kensington, London SW7 2AZ, UK |
| Abstract: | Multi-walled carbon nanotube (MWCNT)/C/polystyrene (PS) composite materials were prepared by in situ polymerization of monomer in preformed MWCNT/C foams. MWCNT/C foams were preformed using polyurethane foam as template. The preformed MWCNT/C foams had a more continuous conductive structure than the carbon nanotube networks formed by free assembly in composites. The structure of the MWCNT/C foam network was characterized with scanning electron microscopy. The MWCNT/C/PS composites have an electric conductivity higher than 0.01 S/cm for a filler loading of 1 wt.%. Enhancement of thermal conductivity and mechanical properties by the preformed MWCNT/C foam were also observed. |
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