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Nat Mater. 2002 Nov;1(3):190-4.

Molecular design of strong single-wall carbon nanotube/polyelectrolyte multilayer composites.

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  • 1Chemistry Department, Oklahoma State University, Stillwater, Oklahoma 74078, USA.

Erratum in

  • Nat Mater. 2002 Dec;1(4):257.

Abstract

The mechanical failure of hybrid materials made from polymers and single-wall carbon nanotubes (SWNT) is primarily attributed to poor matrix-SWNT connectivity and severe phase segregation. Both problems can be successfully mitigated when the SWNT composite is made following the protocol of layer-by-layer assembly. This deposition technique prevents phase segregation of the polymer/SWNT binary system, and after subsequent crosslinking, the nanometre-scale uniform composite with SWNT loading as high as 50 wt% can be obtained. The free-standing SWNT/polyelectrolyte membranes delaminated from the substrate were found to be exceptionally strong with a tensile strength approaching that of hard ceramics. Because of the lightweight nature of SWNT composites, the prepared free-standing membranes can serve as components for a variety of long-lifetime devices.

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