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

250 results found

Zainol Abidin MS, Herceg T, Greenhalgh ES, Shaffer M, Bismarck Aet al., 2019, Enhanced fracture toughness of hierarchical carbon nanotube reinforced carbon fibre epoxy composites with engineered matrix microstructure, Composites Science and Technology, Vol: 170, Pages: 85-92, ISSN: 0266-3538

© 2018 Elsevier Ltd Fibre reinforced hierarchical composites further reinforced with up to 25 wt% of carbon nanotubes (CNTs) were manufactured using a wet powder impregnation route. Microstructural heterogeneity in the matrix of these laminates was engineered during wet powder impregnation to produce CNTs rich regions with spatial separation. The Mode I fracture toughness of these heterogeneous hierarchical composites increased by 41% and 26% compared to that of baseline carbon fibre epoxy composites and hierarchical composites with homogeneously distributed CNTs throughout the matrix with similar CNT content, respectively. Increased crack path tortuosity was observed to contribute to this increase in fracture toughness. The interlaminar shear strength was unaffected by the matrix microstructural heterogeneity.

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

Grafting polymers onto single-walled carbon nanotubes (SWCNTs) usefully alters properties but does not typically yield stable, solvated species directly. Despite the expectation of steric stabilization, a damaging (re)dispersion step is usually necessary. Here, poly(vinyl acetate)s (PVAc's) of varying molecular weights are grafted to individualized, reduced SWCNTs at different concentrations to examine the extent of reaction and degree of solvation. The use of higher polymer concentrations leads to an increase in grafting ratio (weight fraction of grafted polymer relative to the SWCNT framework), approaching the limit of random sequentially adsorbed Flory "mushrooms" on the surface. However, at higher polymer concentrations, a larger percentage of SWCNTs precipitate during the reaction; an effect which is more significant for larger weight polymers. The precipitation is attributed to depletion interactions generated by ungrafted homopolymer overcoming Coulombic repulsion of adjacent like-charged SWCNTs; a simple model is proposed. Larger polymers and greater degrees of functionalization favor stable solvation, but larger and more concentrated homopolymers increase depletion aggregation. By using low concentrations (25 μM) of larger molecular weight PVAc (10 kDa), up to 65% of grafted SWCNTs were retained in solution (at 65 μg mL-1) directly after the reaction.

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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

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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

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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

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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

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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

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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

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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

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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

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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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Buckley DJ, Hodge SA, De Marco M, Hu S, Anthony DB, Cullen PL, McKeigue K, Skipper NT, Shaffer MSP, Howard CAet al., 2017, Trajectory of the Selective Dissolution of Charged Single-Walled Carbon Nanotubes, JOURNAL OF PHYSICAL CHEMISTRY C, Vol: 121, Pages: 21703-21712, ISSN: 1932-7447

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De Marco M, Menzel R, Bawaked SM, Mokhtar M, Obaid AY, Basahel SN, Shaffer MSPet al., 2017, Hybrid effects in graphene oxide/carbon nanotube-supported layered double hydroxides: enhancing the CO2 sorption properties, CARBON, Vol: 123, Pages: 616-627, ISSN: 0008-6223

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Miller TS, Suter TM, Telford AM, Picco L, Payton OD, Russell-Pavier F, Cullen PL, Sella A, Shaffer MSP, Nelson J, Tileli V, McMillan PF, Howard CAet al., 2017, Single Crystal, Luminescent Carbon Nitride Nanosheets Formed by Spontaneous Dissolution, NANO LETTERS, Vol: 17, Pages: 5891-5896, ISSN: 1530-6984

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Rubio N, Au H, Leese HS, Hu S, Clancy AJ, Shaffer MSPet al., 2017, Grafting from versus Grafting to Approaches for the Functionalization of Graphene Nanoplatelets with Poly(methyl methacrylate), MACROMOLECULES, Vol: 50, Pages: 7070-7079, ISSN: 0024-9297

JOURNAL ARTICLE

Pike SD, Garcia-Trenco A, White ER, Leung AHM, Weiner J, Shaffer MSP, Williams CKet al., 2017, Colloidal Cu/ZnO catalysts for the hydrogenation of carbon dioxide to methanol: investigating catalyst preparation and ligand effectst, CATALYSIS SCIENCE & TECHNOLOGY, Vol: 7, Pages: 3842-3850, ISSN: 2044-4753

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Hu S, Laker ZPL, Leese HS, Rubio N, De Marco M, Au H, Skilbeck MS, Wilson NR, Shaffer MSPet al., 2017, Thermochemical functionalisation of graphenes with minimal framework damage, CHEMICAL SCIENCE, Vol: 8, Pages: 6149-6154, ISSN: 2041-6520

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