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Reductive dissolution of supergrowth carbon nanotubes for tougher nanocomposites by reactive coagulation spinning

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Title: Reductive dissolution of supergrowth carbon nanotubes for tougher nanocomposites by reactive coagulation spinning
Authors: Clancy, AJ
Anthony, D
Fisher, S
Leese, H
Roberts, C
Shaffer, M
Item Type: Journal Article
Abstract: Long single-walled carbon nanotubes, with lengths >10 μm, can be spontaneously dissolved by stirring in a sodium naphthalide N,N-dimethylacetamide solution, yielding solutions of individualised nanotubide ions at concentrations up to 0.74 mg mL−1. This process was directly compared to ultrasonication and found to be less damaging while maintaining greater intrinsic length, with increased individualisation, yield, and concentration. Nanotubide solutions were spun into fibres using a new reactive coagulation process, which covalently grafts a poly(vinyl chloride) matrix to the nanotubes directly at the point of fibre formation. The grafting process insulated the nanotubes electrically, significantly enhancing the dielectric constant to 340% of the bulk polymer. For comparison, samples were prepared using both Supergrowth nanotubes and conventional shorter commercial single-walled carbon nanotubes. The resulting nanocomposites showed similar, high loadings (ca. 20 wt%), but the fibres formed with Supergrowth nanotubes showed significantly greater failure strain (up to ∼25%), and hence more than double the toughness (30.8 MJ m−3), compared to composites containing typical ∼1 μm SWCNTs.
Issue Date: 7-Jul-2017
Date of Acceptance: 30-May-2017
URI: http://hdl.handle.net/10044/1/65681
DOI: https://dx.doi.org/10.1039/C7NR00734E
ISSN: 2040-3372
Publisher: Royal Society of Chemistry
Start Page: 8764
End Page: 8773
Journal / Book Title: Nanoscale
Volume: 9
Issue: 9
Copyright Statement: © The Royal Society of Chemistry 2017. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence (https://creativecommons.org/licenses/by/3.0/)
Sponsor/Funder: Engineering & Physical Science Research Council (E
Commission of the European Communities
Engineering and Physical Sciences Research Council
Funder's Grant Number: AERO/RB1527
604093
Keywords: Science & Technology
Physical Sciences
Technology
Chemistry, Multidisciplinary
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Physics, Applied
Chemistry
Science & Technology - Other Topics
Materials Science
Physics
POLYMER COMPOSITES
ASPECT-RATIO
FIBERS
FUNCTIONALIZATION
POLYELECTROLYTES
DISPERSION
THRESHOLD
FILAMENTS
STRENGTH
GROWTH
10 Technology
02 Physical Sciences
03 Chemical Sciences
Publication Status: Published
Open Access location: http://dx.doi.org/10.1039/C7NR00734E
Online Publication Date: 2017-05-31
Appears in Collections:Chemistry
Faculty of Natural Sciences



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