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Now showing items 11-20 of 26
Quantitative comparison of ultracentrifuged and diluted single walled nanotube
(2009)
We have carried out a quantitative comparison of the dispersion quality for ultracentrifuged and diluted surfactant-stabilised single walled nanotube dispersions. We have characterised these dispersions at a set concentration ...
Development of stiff, strong, yet tough composites by the addition of solvent exfoliated graphene to polyurethane
(2010)
We have prepared graphene dispersions, stabilised by polyurethane in tetrahydrofuran and dimethylformamide. These dispersions can be drop-cast to produce free-standing composite films. The graphene mass fraction is determined ...
Increased response/recovery lifetimes and reinforcement of Polyaniline Nanofiber Films using Carbon Nanotubes
(2012)
We have prepared high surface area, conductive, mechanically robust, responsive polyaniline-carbon nanotune composite films. These were produced by filtration from dilute dispersions of polyaniline nanofibers and single-walled ...
Oxygen radical functionalization of boron nitride nanosheets
(2012)
The covalent chemical functionalization of exfoliated hexagonal boron-nitride nanosheets (BNNSs) is achieved by the solution phase oxygen radical functionalization of boron atoms in the h-BN lattice. This involves a two-step ...
Improved adhesive strength and toughness of polyvinyl acetate glue on addition of small quantities of graphene
(2013)
We have prepared composites of polyvinyl acetate (PVAc) reinforced with solution exfoliated graphene. We observe a 50% increase in stiffness and a 100% increase in tensile strength on addition of 0.1vol% graphene compared ...
Improving the mechanical properties of graphene oxide based materials by covalent attachment of polymer chains
(2013)
We report on the modification of graphene oxide (GO) with polyvinylalcohol (PVA) leading to the mechanical improvement of GO based materials. First, GO was covalently functionalised with PVA by esterification of carboxylic ...
Nitrogen assisted etching of graphene layers in a scanning electron microscope
(2011)
We describe the controlled patterning of nanopores in graphene layers by using the low-energy (<10?keV) focused electron beam in a scanning electron microscope. Regular nanometer-sized holes can be fabricated with the ...
Percolation scaling in composites of exfoliated MoS 2 filled with nanotubes and graphene
(2012)
Applications of films of exfoliated layered compounds in many areas will be limited by their relatively low electrical conductivity. To address this, we have prepared and characterised composites of a nano-conductor ...