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Locking carbon nanotubes in confined lattice geometries--a route to low percolation in conducting composites.

Jurewicz, I, Worajittiphon, P, King, AA, Sellin, PJ, Keddie, JL and Dalton, AB (2011) Locking carbon nanotubes in confined lattice geometries--a route to low percolation in conducting composites. J Phys Chem B, 115 (20). pp. 6395-6400.

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Abstract

A significant reduction in the electrical percolation threshold is achieved by locking carbon nanotubes (CNTs) in a predominantly hexagonally close-packed (HCP) colloidal crystal lattice of partially plasticized latex particles. Contrary to other widely used latex processing where CNTs are randomly distributed within the latex matrix, for the first time, we show that excluding CNTs from occupying the interior volume of the latex particles promotes the formation of a nonrandom segregated network. The electrical percolation threshold is four times lower in an ordered segregated network made with colloidal particles near their glass transition temperature (T(g)) in comparison to in a random network made with particles at a temperature well above the T(g). This method allows for a highly reproducible way to fabricate robust, stretchable, and electrically conducting thin films with significantly improved transparency and lattice percolation at a very low CNT inclusion which may find applications in flexible and stretchable electronics as well as other stretchable technologies. For instance, our technology is particularly apt for touch screen applications, where one needs homogeneous distribution of the conductive filler throughout the matrix.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Jurewicz, IUNSPECIFIEDUNSPECIFIED
Worajittiphon, PUNSPECIFIEDUNSPECIFIED
King, AAUNSPECIFIEDUNSPECIFIED
Sellin, PJUNSPECIFIEDUNSPECIFIED
Keddie, JLUNSPECIFIEDUNSPECIFIED
Dalton, ABUNSPECIFIEDUNSPECIFIED
Date : 26 May 2011
Identification Number : 10.1021/jp111998p
Depositing User : Symplectic Elements
Date Deposited : 28 Mar 2017 14:59
Last Modified : 31 Oct 2017 14:17
URI: http://epubs.surrey.ac.uk/id/eprint/102443

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