278 results found
Celaya Sanfiz A, Garcia-Gallastegui A, Iruretagoyena D, et al., 2012, Self condensation of acetone over Mg-Al layered double hydroxide supported on multi-walled carbon nanotube catalysts
Fogden S, Howard CA, Heenan RK, et al., 2012, Scalable Method for the Reductive Dissolution, Purification, and Separation of Single-Walled Carbon Nanotubes, ACS NANO, Vol: 6, Pages: 54-62, ISSN: 1936-0851
Menzel R, Cottam BF, Ziemian SC, et al., 2012, Two-stage, non-hydrolytic synthesis for improved control of TiO2 nanorod formation, JOURNAL OF MATERIALS CHEMISTRY, Vol: 22, Pages: 12172-12178, ISSN: 0959-9428
Bismarck A, Carreyette S, Fontana QPV, et al., 2012, Multifunctional epoxy resin for structural supercapacitors, ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials
Polymer-based electrolytes based on commercially available epoxy resins were prepared through the addition of a liquid electrolyte, a solution of a lithium salt in an ionic liquid. The polymer monoliths were characterized using impedance spectroscopy, 3-point bending test, scanning electron microscopy (SEM) and nitrogen adsorption (BET). The balance of ionic conductivity and flexural modulus is crucially dependent on the relative proportions of epoxy resin to electrolyte. Also the effect of the liquid electrolyte on curing kinetics and processing was assessed by complex viscosity measurements and differential scanning calorimetry (DSC). Only one out of the three resins investigated exhibited a significant acceleration effect.
Qian H, Diao HL, Houllé M, et al., 2012, Carbon fibre modifications for composite structural power devices, ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials
This research project focuses on the development of new multifunctional composite materials, which allow energy storage functionality to be imbued upon low weight structural components. A crucial requirement for efficient structural energy storage composites is the development of structural carbon fibre electrode materials that possess high electrochemical surface area and stability whilst supporting high mechanical loads. In the present work, a variety of carbon fibre modifications were investigated, including chemical activation, carbon nanotube (CNT) sizing and CNT-grafting. The effects of these different modification methods on the fibre surface microstructure, electrochemical, and mechanical performance were studied and compared. In the most promising cases, up to a hundred-fold improvement in electrical storage capacity was achieved. Furthermore, single fibre tensile tests demonstrated that the intrinsically excellent mechanical properties of the carbon fibre were retained after the modifications.
Hodge SA, Bayazit MK, Coleman KS, et al., 2012, Unweaving the rainbow: a review of the relationship between single-walled carbon nanotube molecular structures and their chemical reactivity, CHEMICAL SOCIETY REVIEWS, Vol: 41, Pages: 4409-4429, ISSN: 0306-0012
Shaffer M, Fogden S, Skipper N, et al., 2011, METHOD FOR SEPARATING NANOMATERIALS, US2011308968 (A1)
Shaffer M, Howard C, Skipper N, et al., 2011, METHOD FOR DISPERSING AND SEPARATING NANOTUBES, US2011287258
Bismarck A, Shaffer M, Menzel R, et al., 2011, Process for the production of a functionalised carbon nanomaterial, US2011245384
Koziol KKK, Boncel S, Shaffer MSP, et al., 2011, Aligned carbon nanotube-polystyrene composites prepared by in situ polymerisation of stacked layers, COMPOSITES SCIENCE AND TECHNOLOGY, Vol: 71, Pages: 1606-1611, ISSN: 0266-3538
Boncel S, Koziol KKK, Walczak KZ, et al., 2011, Infiltration of highly aligned carbon nanotube arrays with molten polystyrene, MATERIALS LETTERS, Vol: 65, Pages: 2299-2303, ISSN: 0167-577X
Cho J, Inam F, Reece MJ, et al., 2011, Carbon nanotubes: do they toughen brittle matrices?, JOURNAL OF MATERIALS SCIENCE, Vol: 46, Pages: 4770-4779, ISSN: 0022-2461
Orchard KL, Harris JE, White AJP, et al., 2011, Solvent Dependence of the Structure of Ethylzinc Acetate and Its Application in CO2/Epoxide Copolymerization, ORGANOMETALLICS, Vol: 30, Pages: 2223-2229, ISSN: 0276-7333
Bismarck A, Julasak J, Mantalaris A, et al., 2011, MATERIAL COMPRISING MICROBIALLY SYNTHESIZED CELLULOSE ASSOCIATED WITH A SUPPORT LIKE A POLYMER AND/OR FIBRE, US2011021701
Qian H, Kalinka G, Chan KLA, et al., 2011, Mapping local microstructure and mechanical performance around carbon nanotube grafted silica fibres: Methodologies for hierarchical composites, NANOSCALE, Vol: 3, Pages: 4759-4767, ISSN: 2040-3364
Mourad MCD, Mokhtar M, Tucker MG, et al., 2011, Activation and local structural stability during the thermal decomposition of Mg/Al-hydrotalcite by total neutron scattering, JOURNAL OF MATERIALS CHEMISTRY, Vol: 21, Pages: 15479-15485, ISSN: 0959-9428
McSharry C, Faulkner R, Rivers S, et al., 2011, Solvent effects on East Asian lacquer (Toxicodendron vernicifluum), East Asian Lacquer: Material Culture, Science and Conservation, Editors: Rivers, Faulkner, Pretzel, London, Publisher: Archetype Publications
Menzel R, Tran MQ, Menner A, et al., 2010, A versatile, solvent-free methodology for the functionalisation of carbon nanotubes, CHEMICAL SCIENCE, Vol: 1, Pages: 603-608, ISSN: 2041-6520
Bismarck A, Shaffer M, Tran M, et al., 2010, PRODUCTION OF COMPOSITE MATERIAL, WO2010081821
BISMARCK ALEXANDER [GB]; SHAFFER MILO SEBASTIAN PETER [GB]; TRAN MIKE Q [GB]; LAMORIN
Gonzalez-Campo A, Shaffer M, Williams C, et al., 2010, NANOCOMPOSITE MATERIAL, METHOD FOR PRODUCING NANOCOMPOSITE MATERIAL, AND INSULATING MATERIAL, WO2010026668
Qian H, Bismarck A, Greenhalgh ES, et al., 2010, Carbon nanotube grafted silica fibres: Characterising the interface at the single fibre level, COMPOSITES SCIENCE AND TECHNOLOGY, Vol: 70, Pages: 393-399, ISSN: 0266-3538
Rahatekar SS, Shaffer MSP, Elliott JA, 2010, Modelling percolation in fibre and sphere mixtures: Routes to more efficient network formation, COMPOSITES SCIENCE AND TECHNOLOGY, Vol: 70, Pages: 356-362, ISSN: 0266-3538
Qian H, Bismarck A, Greenhalgh ES, et al., 2010, Synthesis and characterisation of carbon nanotubes grown on silica fibres by injection CVD, CARBON, Vol: 48, Pages: 277-286, ISSN: 0008-6223
Qian H, Bismarck A, Greenhalgh ES, et al., 2010, Carbon nanotube grafted carbon fibres: A study of wetting and fibre fragmentation, Composites Part A, Vol: 41, Pages: 1107-1114
Carbon nanotubes (CNTs) were grafted on IM7 carbon fibres using a chemical vapour deposition method.The overall grafting process resulted in a threefold increase of the BET surface area compared to the original primary carbon fibres (0.57 m2/g). At the same time, there was a degradation of fibre tensile strength by around 15% (depending on gauge length), due to the dissolution of iron catalyst into the carbon;the modulus was not significantly affected. The wetting behaviour between fibres and poly(methylmethacrylate) (PMMA) was directly quantified using contact angle measurements for drop-on-fibre systems and indicated good wettability. Single fibre fragmentation tests were conducted on hierarchical fibre/PMMA model composites, demonstrating a significant (26%) improvement of the apparent interfacial shear strength (IFSS) over the baseline composites. The result is associated with improved stress transfer between the carbon fibres and surrounding matrix, through the grafted CNT layer. The improved IFSS was found to correlate directly with a reduced contact angle between fibre and matrix.
Qian H, Greenhalgh ES, Shaffer MSP, et al., 2010, Carbon nanotube-based hierarchical composites: a review, Journal of Materials Chemistry
The introduction of carbon nanotubes (CNTs) into conventional fibre-reinforced polymer composites creates a hierarchical reinforcement structure and can significantly improve composite performance. This paper reviews the progress to date towards the creation of fibre reinforced (hierarchical) nanocomposites and assesses the potential for a new generation of advanced multifunctional materials. Two alternative strategies for forming CNT-based hierarchical composites are contrasted, the dispersion of CNTs into the composite matrix and their direct attachment onto the primary fibre surface. The implications of each approach for composite processing and performance are discussed, along with a summary of the measured improvements in the mechanical, electrical and thermal properties of the resulting hierarchical composites.
Shaffer M, Qian H, Menner A, et al., 2009, Hierarchical composites combining nanoscale reinforcements with conventional fibres, ICCM International Conferences on Composite Materials
Hierarchical composites introduce nanoscale fillers into the matrix of conventional fibre composites, in order to address critical failure modes. The effectiveness of growing carbon nanotubes onto primary fibres is reported at the single-fibre level. The success of an analogous, entirely renewable and biodegradable hierarchical composite system provides encouragement to scale-up.
Bangarusampath DS, Ruckdaeschel H, Altstaedt V, et al., 2009, Rheology and properties of melt-processed poly(ether ether ketone)/multi-wall carbon nanotube composites, POLYMER, Vol: 50, Pages: 5803-5811, ISSN: 0032-3861
Bangarusampath DS, Ruckdaeschel H, Altstaedt V, et al., 2009, Rheological and electrical percolation in melt-processed poly(ether ether ketone)/multi-wall carbon nanotube composites, CHEMICAL PHYSICS LETTERS, Vol: 482, Pages: 105-109, ISSN: 0009-2614
Orchard KL, White AJP, Shaffer MSP, et al., 2009, Pentanuclear Complexes for a Series of Alkylzinc Carboxylates, ORGANOMETALLICS, Vol: 28, Pages: 5828-5832, ISSN: 0276-7333
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