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Highly strong and conductive carbon nanotube/cellulose composite paper

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Title: Highly strong and conductive carbon nanotube/cellulose composite paper
Authors: Imai, Masanori Browse this author
Akiyama, Kousuke Browse this author
Tanaka, Tomo Browse this author
Sano, Eiichi Browse this author →KAKEN DB
Keywords: Carbon nanotubes
Flexible composites
Nano composites
Electrical properties
Issue Date: 30-Sep-2010
Publisher: Elsevier
Journal Title: Composites Science and Technology
Volume: 70
Issue: 10
Start Page: 1564
End Page: 1570
Publisher DOI: 10.1016/j.compscitech.2010.05.023
Abstract: Carbon nanotube (CNT)/cellulose composite materials were fabricated in a paper making process optimized for a CNT network to form on the cellulose fibers. The measured electric conductivity was from 0.05-671 S/m for 0.5-16.7-wt% CNT content, higher than that for other polymer composites. The real permittivities were the highest in the microwave region. The unique CNT network structure is thought to be the reason for these high conductivity and permittivity values. Compared to other carbon materials, our carbon CNT/cellulose composite material had improved parameters without decreased mechanical strength. The near-field electromagnetic shielding effectiveness (EMI SE) measured by a microstrip line method depended on the sheet conductivity and qualitatively matched the results of electromagnetic field simulations using a finite-difference time-domain simulator. A high near-field EMI SE of 50-dB was achieved in the 5-10 GHz frequency region with 4.8-wt% composite paper. The far-field EMI SE was measured by a free space method. Fairly good agreement was obtained between the measured and calculated results. Approximately 10-wt% CNT is required to achieve composite paper with 20-dB far-field EMI SE.
Type: article (author version)
Appears in Collections:量子集積エレクトロニクス研究センター (Research Center for Integrated Quantum Electronics) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 佐野 栄一

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