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Distortion of chain conformation and reduced entanglement in polymer–graphene oxide nanocomposites.

Weir, M. P. and Johnson, D. W. and Boothroyd, S. C. and Savage, R. C. and Thompson, R. L. and King, S. M. and Rogers, S. E. and Coleman, K. S. and Clarke, N. (2016) 'Distortion of chain conformation and reduced entanglement in polymer–graphene oxide nanocomposites.', ACS macro letters., 5 (4). pp. 430-434.


We study the conformations of polymer chains in polymer–graphene oxide nanocomposites. We show that the chains have a reduced radius of gyration that is consistent with confinement at a solid interface in the melt, as is expected for well-dispersed, high aspect ratio nanoparticles that are much larger than the polymer coil size. We show that confinement of the polymer chains causes a corresponding reduction in interchain entanglements, and we calculate a contribution to the plateau modulus from the distorted polymer network via a simple scaling argument. Our results are a significant step forward in understanding how two-dimensional nanoparticles affect global material properties at low loadings.

Item Type:Article
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Publisher statement:ACS AuthorChoice - This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
Date accepted:08 March 2016
Date deposited:23 March 2016
Date of first online publication:09 March 2016
Date first made open access:09 March 2017

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