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Issue 4, 2012
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Approaching the theoretical limit for reinforcing polymers with graphene

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Abstract

We have prepared polymer-graphene composites from sonication-exfoliated graphene. Using centrifugation-based size selection, we prepared composites using flakes of two different aspect ratios, ∼1000 and ∼2000. We find very little reinforcement using the smaller flakes. However, the larger flakes result in a doubling in modulus and strength for <0.4 vol% graphene. We show these results to be in line with theory which predicts a sharp increase in reinforcement efficiency as the aspect ratio is increased from 1000 to 2000. The observed reinforcement exactly matches that expected for the measured flake size and is within 30% of the ultimate limit.

Graphical abstract: Approaching the theoretical limit for reinforcing polymers with graphene

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Publication details

The article was received on 26 Oct 2011, accepted on 21 Nov 2011 and first published on 05 Dec 2011


Article type: Communication
DOI: 10.1039/C1JM15467B
J. Mater. Chem., 2012,22, 1278-1282

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    Approaching the theoretical limit for reinforcing polymers with graphene

    P. May, U. Khan, A. O'Neill and J. N. Coleman, J. Mater. Chem., 2012, 22, 1278
    DOI: 10.1039/C1JM15467B

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