Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 114, Issue 5, Pages 2864-2872Publisher
WILEY-BLACKWELL
DOI: 10.1002/app.30829
Keywords
singlewalled carbon nanotubes; bacterial cellulose membrane; nanocomposites
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Funding
- Korean government (MEST) [R11-2005-065]
- Korea Institute of Industrial Technology(KITECH) [10024595] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2008-0057395, 핵09A1312] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Transparent and electrically conducting films were fabricated using a novel and simple method in which single-walled carbon nanotubes (SWCNTs) adsorbed onto bacterial cellulose membranes were embedded into a transparent polymer resin. The bacterial cellulose membranes consisting of numerous nanofibrils were found to play important roles in this process. The bacterial cellulose membranes impart optical transparency to the nanocomposites due to the size of the materials during the synthesis of the nanocomposite using a transparent polymer resin. The membranes play a secondary role as a template for depositing uniformly dispersed SWCNTs. This results in not only electrically conducting pathways but also prevents interference from the transmittance of optically transparent nanocomposites. Transparent conducting films with a wide range of transmittances and surface resistances could be obtained by controlling the immersion time and SWCNT concentration in the SWCNT dispersions. A transparent conducting film with a transmittance and surface resistance of 77.1% at 550 ran and 2.8 k Omega/sq, respectively, was fabricated from a 0.01 wt %. SWCNT dispersion for an immersion time of 3 h. In addition, the transparent conducting films were quite flexible and maintained their properties even after crumpling. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 114: 2864-2872, 2009
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