Micro Orientation and Anisotropy of Conductivity in Liquid Crystalline Polymer Films Filled with Carbon Nanotubes

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Abstract:

In this communication we report the preferential orientation of single wall carbon nanotubes (SWNT) in a nematic liquid crystalline (LC) polymer matrix. The alignment of the nanotubes was characterized through anisotropy of electrical conductivity of the composite measured in directions parallel and perpendicular to the nematic director. The anisotropy of the nanocomposite films strongly depends on the nanotube concentration in the range from 1 to 10% and vanished at higher loads. The electrical conductivity of nanocomposites is related to their structural features revealed by atomic force microscopy and Raman spectroscopy experiments and is explained by a strong coupling between the nanotubes and the polymer matrix.

Keywords: ELECTRICAL CONDUCTIVITY; LIQUID CRYSTALLINE POLYMER; NANOCOMPOSITES; SINGLE WALL CARBON NANOTUBES

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2005.193

Publication date: October 1, 2005

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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