Graphene Nanoribbon Composites
- 16 November 2010
- journal article
- research article
- Published by American Chemical Society (ACS) in ACS Nano
- Vol. 4 (12), 7415-7420
- https://doi.org/10.1021/nn102529n
Abstract
It is well established that pristine multiwalled carbon nanotubes offer poor structural reinforcement in epoxy-based composites. There are several reasons for this which include reduced interfacial contact area since the outermost nanotube shields the internal tubes from the matrix, poor wetting and interfacial adhesion with the heavily cross-linked epoxy chains, and intertube slip within the concentric nanotube cylinders leading to a sword-in-sheath type failure. Here we demonstrate that unzipping such multiwalled carbon nanotubes into graphene nanoribbons results in a significant improvement in load transfer effectiveness. For example, at ∼0.3% weight fraction of nanofillers, the Young’s modulus of the epoxy composite with graphene nanoribbons shows ∼30% increase compared to its multiwalled carbon nanotube counterpart. Similarly the ultimate tensile strength for graphene nanoribbons at ∼0.3% weight fraction showed ∼22% improvement compared to multiwalled carbon nanotubes at the same weight fraction of nanofillers in the composite. These results demonstrate that unzipping multiwalled carbon nanotubes into graphene nanoribbons can enable their utilization as high-performance additives for mechanical properties enhancement in composites that rival the properties of singlewalled carbon nanotube composites yet at an order of magnitude lower cost.This publication has 19 references indexed in Scilit:
- Improved Synthesis of Graphene OxideACS Nano, 2010
- Lower-Defect Graphene Oxide Nanoribbons from Multiwalled Carbon NanotubesACS Nano, 2010
- N-Doping of Graphene Through Electrothermal Reactions with AmmoniaScience, 2009
- Narrow graphene nanoribbons from carbon nanotubesNature, 2009
- Longitudinal unzipping of carbon nanotubes to form graphene nanoribbonsNature, 2009
- Bulk Production of a New Form of sp2 Carbon: Crystalline Graphene NanoribbonsNano Letters, 2008
- Chemically Derived, Ultrasmooth Graphene Nanoribbon SemiconductorsScience, 2008
- Graphene nano-ribbon electronicsPhysica E: Low-dimensional Systems and Nanostructures, 2007
- Energy Band-Gap Engineering of Graphene NanoribbonsPhysical Review Letters, 2007
- Functionalized Single Graphene Sheets Derived from Splitting Graphite OxideThe Journal of Physical Chemistry B, 2006