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- W2908457529 abstract "Here we report the microwave characterization and electromagnetic interference (EMI) shielding property of polyvinyl alcohol (PVA) based thin and flexible composite films containing carbon nanofibers (CNF) and nanofibrillated cellulose (NFC). Microwave properties of the composites were analyzed in terms of permittivity, loss tangent, skin depth and absorption coefficient. High permittivity, absorption coefficient and low skin depth were obtained for carbon nanofiber-based composites owing to its good electrical conductivity. The shielding effectiveness (SE) of two composites was measured in the 2–4 GHz (S- band) and 8–12 GHz (X-band) frequency range. Abrupt increase of SE with increasing fiber concentration was observed for CNF based composite. An electromagnetic shielding effectiveness of about −31.5 dB in the S band and of -33.6 dB in the X band was achieved at 0.11 mm thickness. The SE due to absorption (SEA) and reflection (SER) were increased with increase of PANI/CNF content. Additionally, CNF based composite film had a very low density of 0.11 g/cm3. Compared to metals and other carbonaceous materials, this composite film exhibited a high specific EMI shielding efficiency of −177 dB cm3/g." @default.
- W2908457529 created "2019-01-11" @default.
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- W2908457529 date "2019-01-01" @default.
- W2908457529 modified "2023-09-26" @default.
- W2908457529 title "A comparative study on electromagnetic interference shielding effectiveness of carbon nanofiber and nanofibrillated cellulose composites" @default.
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- W2908457529 doi "https://doi.org/10.1016/j.synthmet.2018.12.021" @default.
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