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Transparent conducting films based on nanofibrous polymeric membranes and single‐walled carbon nanotubes
Author(s) -
Kim Yeseul,
Kim HunSik,
Bak Hyeonseong,
Yun Young Soo,
Cho Se Youn,
Jin HyoungJoon
Publication year - 2009
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.30829
Subject(s) - materials science , carbon nanotube , membrane , bacterial cellulose , nanocomposite , transmittance , polymer , cellulose , chemical engineering , composite material , optoelectronics , chemistry , biochemistry , engineering
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 nm and 2.8 kΩ/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. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009