Development of Carbon Nanotube-Cellulose Composite Sheets and Their Applications to Electroconductive Structures
In this chapter, the production of carbon nanotube (CNT)-cellulose composite sheets and their electrical conductivity have been studied. Good electroconductive CNT-cellulose composite sheets and good electromagnetic interference (EMI) shields have been obtained. Single-walled carbon nanotubes (SWCNT...
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| Autores principales: | , |
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| Formato: | Capítulo de libro |
| Lenguaje: | inglés |
| Publicado: |
IntechOpen
2024
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| Materias: | |
| Acceso en línea: | https://www.intechopen.com/chapters/89109 |
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| Sumario: | In this chapter, the production of carbon nanotube (CNT)-cellulose composite sheets and their electrical conductivity have been studied. Good electroconductive CNT-cellulose composite sheets and good electromagnetic interference (EMI) shields have been obtained. Single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) were used to produce the CNT-cellulose composite sheets. In the ecofriendly process, CNTs, cellulose, and gelatin were mixed well to prepare the sheets. The performance of the SWCNTs-cellulose and MWCNTs-cellulose composite sheets was studied for 8.9, 13, and 17 wt% of CNT contents. Their electrical properties were measured by the DC current method, and their optical properties (reflection and absorption) were measured using a microwave transmitter of 10.5 GHz. Herein, significant differences in the electric properties and the EMI shielding effects between the MWCNTs-cellulose and the SWCNTs-cellulose composite sheets were found. The SWCNTs-cellulose composite sheets showed good characteristics for electromagnetic wave (EMW) shielding. In the microwave region, the SWCNTs-cellulose composite sheets showed lower transmission and higher reflection properties compared to the MWCNTs-cellulose composite sheets. The shields do not generate dust or particles and possess flexibility and toughness. With these sheets, 3D flexible circuits, flexible electric heaters, EMW shields, EMW polarizers, and cone-shaped EMW absorbers could be prepared. |
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| ISBN: | 978-0-85014-357-7 |
| DOI: | 10.5772/intechopen.114265 |