Mechanical and electromagnetic interference shielding Properties of poly(vinyl alcohol)/graphene and poly(vinyl alcohol)/multi-walled carbon nanotube composite nanofiber mats and the effect of Cu top-layer coating
| Autor: | Kazushige Fujimori, Ick Soo Kim, Byoung-Suhk Kim, Mayakrishnan Gopiraman, Han-Ki Kim |
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| Rok vydání: | 2013 |
| Předmět: |
Vinyl alcohol
Materials science Graphene Composite number Biomedical Engineering Bioengineering General Chemistry Carbon nanotube Condensed Matter Physics Electrospinning law.invention chemistry.chemical_compound chemistry law Transmission electron microscopy Nanofiber Ultimate tensile strength General Materials Science Composite material |
| Zdroj: | Journal of nanoscience and nanotechnology. 13(3) |
| ISSN: | 1533-4880 |
| Popis: | We report the mechanical property and electromagnetic interference shielding effectiveness (EMI SE) of poly(vinyl alcohol) (PVA)/graphene and PVA/multi-walled carbon nanotube (MWCNT) composite nanofibers prepared by electrospinning. The metal (Cu) was deposited on the resultant PVA composite nanofibers using metal deposition technique in order to improve the mechanical properties and EMI shielding properties. The resulting PVA composite nanofibers and Cu-deposited corresponding nanofibers were characterized by field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM) and wide angle X-ray diffraction (WAXD). Tensile tests were performed on the PVA/graphene and PVA/MWCNT composite nanofibers. The tensile strength of the PVA/graphene and PVA/MWCNT composite nanofibers was found to be 19.2 +/- 0.3 MPa at graphene content - 6.0 wt% and 12.2 +/- 0.2 MPa at MWCNT content - 3.0 wt%, respectively. The EMI SE of the Cu-deposited PVA/graphene composite nanofibers was significantly improved compared to pure PVA/graphene composite nanofibers, and also depended on the thickness of Cu metal layer deposited on the PVA composite nanofibers. |
| Databáze: | OpenAIRE |
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