Imperial College London

Prof Milo Shaffer

Faculty of Natural SciencesDepartment of Chemistry

Professor of Materials Chemistry
 
 
 
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Contact

 

+44 (0)20 7594 5825m.shaffer Website

 
 
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Assistant

 

Mr John Murrell +44 (0)20 7594 2845

 
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Location

 

M221Royal College of ScienceSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

256 results found

Kennedy OW, White R, Shaffer MSP, Warburton PAet al., 2019, Vapour-liquid-solid growth of ZnO-ZnMgO core-shell nanowires by gold-catalysed molecular beam epitaxy, NANOTECHNOLOGY, Vol: 30, ISSN: 0957-4484

JOURNAL ARTICLE

Lee WJ, Clancy AJ, Fernández-Toribio JC, Anthony DB, White ER, Solano E, Leese HS, Vilatela JJ, Shaffer MSPet al., 2019, Interfacially-grafted single wall carbon nanotube / poly (vinyl alcohol) composite fibers, Carbon, Vol: 146, Pages: 162-171, ISSN: 0008-6223

© 2019 Nanocomposites are critically influenced by interfacial interactions between the reinforcement and matrix. Polyvinyl alcohol (PVOH) of varying molecular weights were prepared and grafted-to single-walled carbon nanotubes (SWCNTs), to improve the interfacial interaction with a homopolymer PVOH matrix. Nanocomposite fibers were coagulation spun across a broad range of loading fractions, controlled by the spinning dope composition. An intermediate grafted-PVOH molecular weight (10 kDa) maximized grafting ratio, and the final composite mechanical performance; the positive effects were attributed to the increased degree of dispersion of the SWCNTs in the dope, as well as the favorable interface. The PVOH grafting increased the stability of the SWCNT loading fractions (up to 45 wt.%), offering increased strength (up to 1100 MPa) and stiffness (up to 38.5 GPa); at the same time, strain-to-failures remained high (up to 23.3%), resulting in high toughness (up to 125 J g −1 ).

JOURNAL ARTICLE

Kennedy OW, White ER, Howkins A, Williams CK, Boyd IW, Warburton PA, Shaffer MSPet al., 2019, Mapping the Origins of Luminescence in ZnO Nanowires by STEM-CL, JOURNAL OF PHYSICAL CHEMISTRY LETTERS, Vol: 10, Pages: 386-392, ISSN: 1948-7185

JOURNAL ARTICLE

Clancy A, Sirisinudomkit P, Anthony D, Thong A, Greenfield J, Salaken Singh MK, Shaffer Met al., 2019, Real-time mechanistic study of carbon nanotube anion functionalisation through open circuit voltammetry, Chemical Science, ISSN: 2041-6520

The mechanism of the functionalisation of reduced single walled carbon nanotubes with organobromides was monitored byopen circuit voltammetry throughout the reaction and further elucidated through a series of comparative reactions. Thedegree of functionalisation was mapped against the reagent reduction potential, degree of electron donation of substituents(Hammett parameter), and energies calculated, ab initio, for dissociation and heterolytic cleavage of the C-Br bond. Incontrast to the previously assumed reduction/homolytic cleavage mechanism, the reaction was shown to consist of a rapidassociation of carbon-halide bond to the reduced nanotube as a complex, displacing surface-condensed countercations,leading to an initial increase in the net nanotube surface negative charge. The complex subsequently slowly degradesthrough charge transfer from the reduced single-walled carbon nanotube to the organobromide, utilizing charge, and thecarbon-halide bond breaks heterolytically. Electron density on the C-Br bond in the initial reagent is the best predictor fordegree of functionalisation, with more electron donating substituents increasing the degree of functionalisation. Both themechanism and the new application of OCV to study such reactions are potentially relevant to wide range of related systems.

JOURNAL ARTICLE

Liu B, Liu C, De Luca HG, Raman Pillai SK, Anthony DB, Li J, Bismarck A, Shaffer MSP, Chan-Park MBet al., 2019, Synthesis of epoxidized poly(ester carbonate)-b-polyimide-b-poly(ester carbonate): reactive single-walled carbon nanotube dispersants enable synergistic reinforcement around multi-walled nanotube-grafted carbon fibers, Polymer Chemistry, ISSN: 1759-9954

<p>Novel triblock polymers for nanocomposite applications.</p>

JOURNAL ARTICLE

Clancy AJ, Leese HS, Rubio N, Buckley DJ, Greenfield JL, Shaffer MSPet al., 2018, Depleting Depletion: Maintaining Single-Walled Carbon Nanotube Dispersions after Graft-To Polymer Functionalization, LANGMUIR, Vol: 34, Pages: 15396-15402, ISSN: 0743-7463

JOURNAL ARTICLE

Zainol Abidin MS, Herceg T, Greenhalgh ES, Shaffer M, Bismarck Aet al., 2018, Enhanced fracture toughness of hierarchical carbon nanotube reinforced carbon fibre epoxy composites with engineered matrix microstructure, Composites Science and Technology, ISSN: 0266-3538

JOURNAL ARTICLE

Brandley E, Greenhalgh ES, Shaffer MSP, Li Qet al., 2018, Mapping carbon nanotube orientation by fast fourier transform of scanning electron micrographs, CARBON, Vol: 137, Pages: 78-87, ISSN: 0008-6223

JOURNAL ARTICLE

Basma NS, Headen TF, Shaffer MSP, Skipper NT, Howard CAet al., 2018, Local Structure and Polar Order in Liquid N-Methyl-2-pyrrolidone (NMP), JOURNAL OF PHYSICAL CHEMISTRY B, Vol: 122, Pages: 8963-8971, ISSN: 1520-6106

JOURNAL ARTICLE

Jia J, White ER, Clancy AJ, Rubio N, Suter T, Miller TS, McColl K, McMillan PF, Brazdova V, Cora F, Howard CA, Law RV, Mattevi C, Shaffer MSPet al., 2018, Fast Exfoliation and Functionalisation of Two-Dimensional Crystalline Carbon Nitride by Framework Charging, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, Vol: 57, Pages: 12656-12660, ISSN: 1433-7851

JOURNAL ARTICLE

Hart M, Chen J, Michaelides A, Sella A, Shaffer MSP, Salzmann CGet al., 2018, One-Dimensional Arsenic Allotropes: Polymerization of Yellow Arsenic Inside Single-Wall Carbon Nanotubes, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, Vol: 57, Pages: 11649-11653, ISSN: 1433-7851

JOURNAL ARTICLE

Javaid A, Ho KKC, Bismarck A, Steinke JHG, Shaffer MSP, Greenhalgh ESet al., 2018, Improving the multifunctional behaviour of structural supercapacitors by incorporating chemically activated carbon fibres and mesoporous silica particles as reinforcement, JOURNAL OF COMPOSITE MATERIALS, Vol: 52, Pages: 3085-3097, ISSN: 0021-9983

JOURNAL ARTICLE

Anthony DB, Sui X, Kellersztein I, De Luca HG, White ER, Wagner HD, Greenhalgh ES, Bismarck A, Shaffer MSPet al., 2018, Continuous carbon nanotube synthesis on charged carbon fibers, COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, Vol: 112, Pages: 525-538, ISSN: 1359-835X

JOURNAL ARTICLE

Clancy AJ, Bayazit MK, Hodge SA, Skipper NT, Howard CA, Shaffer MSPet al., 2018, Charged Carbon Nanomaterials: Redox Chemistries of Fullerenes, Carbon Nanotubes, and Graphenes, CHEMICAL REVIEWS, Vol: 118, Pages: 7363-7408, ISSN: 0009-2665

JOURNAL ARTICLE

De Luca F, Clancy AJ, Carrero NR, Anthony DB, De Luca HG, Shaffer MSP, Bismarck Aet al., 2018, Increasing carbon fiber composite strength with a nanostructured "brick-and-mortar" interphase, MATERIALS HORIZONS, Vol: 5, Pages: 668-674, ISSN: 2051-6347

JOURNAL ARTICLE

Thong AZ, Shaffer MSP, Horsfield AP, 2018, Rectification and negative differential resistance via orbital level pinning, SCIENTIFIC REPORTS, Vol: 8, ISSN: 2045-2322

JOURNAL ARTICLE

Ellis T, Chiappi M, Garcia-Trenco A, Al-Ejji M, Sarkar S, Georgiou TK, Shaffer MSP, Tetley TD, Schwander S, Ryan MP, Porter AEet al., 2018, Multimetallic Microparticles Increase the Potency of Rifampicin against Intracellular Mycobacterium tuberculosis, ACS NANO, Vol: 12, Pages: 5228-5240, ISSN: 1936-0851

JOURNAL ARTICLE

Fisher SJ, Shaffer MSP, 2018, Rapid quantitative mapping of multi-walled carbon nanotube concentration in nanocomposites, COMPOSITES SCIENCE AND TECHNOLOGY, Vol: 160, Pages: 161-168, ISSN: 0266-3538

JOURNAL ARTICLE

Zhu Y, Radlauer MR, Schneiderman DK, Shaffer MSP, Hillmyer MA, Williams CKet al., 2018, Multiblock Polyesters Demonstrating High Elasticity and Shape Memory Effects, MACROMOLECULES, Vol: 51, Pages: 2466-2475, ISSN: 0024-9297

JOURNAL ARTICLE

Finley JM, Yu H, Longana ML, Pimenta S, Shaffer MSP, Potter KDet al., 2018, Exploring the pseudo-ductility of aligned hybrid discontinuous composites using controlled fibre-type arrangements, COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, Vol: 107, Pages: 592-606, ISSN: 1359-835X

JOURNAL ARTICLE

Robinson RK, Birrell MA, Adcock JJ, Wortley MA, Dubuis ED, Chen S, McGilvery CM, Hu S, Shaffer MSP, Bonvini SJ, Maher SA, Mudway IS, Porter AE, Carlsten C, Tetley TD, Belvisi MGet al., 2018, Mechanistic link between diesel exhaust particles and respiratory reflexes, JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY, Vol: 141, Pages: 1074-+, ISSN: 0091-6749

JOURNAL ARTICLE

Leung AHM, Pike SD, Clancy AJ, Yau HC, Lee WJ, Orchard KL, Shaffer MSP, Williams CKet al., 2018, Layered zinc hydroxide monolayers by hydrolysis of organozincs, CHEMICAL SCIENCE, Vol: 9, Pages: 2135-2146, ISSN: 2041-6520

JOURNAL ARTICLE

De Luca F, Sernicola G, Shaffer MSP, Bismarck Aet al., 2018, "Brick-and-Mortar" Nanostructured Interphase for Glass-Fiber-Reinforced Polymer Composites, ACS APPLIED MATERIALS & INTERFACES, Vol: 10, Pages: 7352-7361, ISSN: 1944-8244

JOURNAL ARTICLE

Kennedy OW, Coke ML, White ER, Shaffer MSP, Warburton PAet al., 2018, MBE growth and morphology control of ZnO nanobelts with polar axis perpendicular to growth direction, MATERIALS LETTERS, Vol: 212, Pages: 51-53, ISSN: 0167-577X

JOURNAL ARTICLE

Woodward RT, Markoulidis F, De Luca F, Anthony DB, Malko D, McDonald TO, Shaffer MSP, Bismarck Aet al., 2018, Carbon foams from emulsion-templated reduced graphene oxide polymer composites: electrodes for supercapacitor devices, JOURNAL OF MATERIALS CHEMISTRY A, Vol: 6, Pages: 1840-1849, ISSN: 2050-7488

JOURNAL ARTICLE

Au H, Rubio N, Shaffer MSP, 2018, Brominated graphene as a versatile precursor for multifunctional grafting, CHEMICAL SCIENCE, Vol: 9, Pages: 209-217, ISSN: 2041-6520

JOURNAL ARTICLE

Finley JM, Henry J, Pimenta S, Shaffer MSPet al., 2018, The influence of variability and defects on the structural performance of discontinuous composites, Pages: 2419-2425

© 2018 by DEStech Publications, Inc. All rights reserved. Composite materials often feature defects, particularly for composites which feature a complex microstructure, such as aligned discontinuous composites. This study uses an accurate but efficient virtual testing framework, which was used to predict the influence of defects on the structural performance of both hybrid and nonhybrid aligned discontinuous composites. Fibre vacancy defects were found to cause the strongest reduction in material properties, while hybridisation was found to be an effective means to reduce the influence of defects on the structural response.

CONFERENCE PAPER

Garcia-Trenco A, Regoutz A, White ER, Payne DJ, Shaffer MSP, Williams CKet al., 2018, PdIn intermetallic nanoparticles for the Hydrogenation of CO2 to Methanol, APPLIED CATALYSIS B-ENVIRONMENTAL, Vol: 220, Pages: 9-18, ISSN: 0926-3373

JOURNAL ARTICLE

Clancy AJ, Serginson JM, Greenfield JL, Shaffer MSPet al., 2017, Systematic comparison of single-walled carbon nanotube/poly(vinyl acetate) graft-to reactions, POLYMER, Vol: 133, Pages: 263-271, ISSN: 0032-3861

JOURNAL ARTICLE

Rocha VG, Garcia-Tunon E, Botas C, Markoulidis F, Feilden E, D'Elia E, Ni N, Shaffer M, Saiz Eet al., 2017, Multimaterial 3D Printing of Graphene-Based Electrodes for Electrochemical Energy Storage Using Thermoresponsive Inks, ACS APPLIED MATERIALS & INTERFACES, Vol: 9, Pages: 37136-37145, ISSN: 1944-8244

JOURNAL ARTICLE

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