Nano Archive

Dramatic effect of dispersed carbon nanotubes on the mechanical and electroconductive properties of polymers derived from ionic liquids

Fukushima, T and Kosaka, A and Yamamoto, Y and Aimiya, T and Notazawa, S and Takigawa, T and Inabe, T and Aida, T (2006) Dramatic effect of dispersed carbon nanotubes on the mechanical and electroconductive properties of polymers derived from ionic liquids. SMALL, 2 (4). pp. 554-560.

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Official URL: http://www3.interscience.wiley.com/journal/1124057...

Abstract

Free-radical polymerization of an imidazolium ion-based ionic liquid bearing a methacrylate group, gelling with single-walled carbon nanotubes (SWNTs), allows fabrication of a mechanically reinforced, electroconductive soft material (bucky plastic). A film. sample of this material displays an excellent conductivity of 1 S cm(-1) and a 120-fold enhancement of the Young's modulus at a 7 wt% content of SWNTs. The conductivity is temperature-dependent in the range 5-300 K, suggesting that the conductive process involves carrier hopping. Scanning electron and atomic force micrographs of a bucky plastic film display the presence of crosslinked networks consisting of finely dispersed SWNTs. Such nanotube networks, developed in the polymer matrix, likely suppress slipping of entrapped polymer molecules via a strong interfacial interaction and also facilitate intertubular carrier transport. Although a bucky plastic derived from a vinylimidazolium ion-based ionic liquid monomer shows a comparable conductivity to that of the methacrylate version, the film is brittle irrespective of the presence or absence of SWNTs.

Item Type:Article
Uncontrolled Keywords:carbon nanotubes; composites; conducting materials; ionic liquids; mechanical properties
Subjects:Material Science > Nanofabrication processes and tools
Physical Science > Nanoelectronics
Material Science > Soft materials
ID Code:3803
Deposited By:SPI
Deposited On:23 Jan 2009 10:41
Last Modified:23 Jan 2009 10:41

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