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Isocyanate-functionalised graphene oxide and poly(vinyl alcohol) nacre-mimetic inspired freestanding films
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Smith, Andrew, Figiel, Lukasz, Wan, Chaoying and McNally, Tony (2022) Isocyanate-functionalised graphene oxide and poly(vinyl alcohol) nacre-mimetic inspired freestanding films. Nanoscale Advances, 4 (1). pp. 49-57. doi:10.1039/D1NA00792K ISSN 2516-0230.
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WRAP-isocyanate-functionalised-graphene-oxide-poly(vinyl-alcohol)-nacre-mimetic-inspired-freestanding-films-2021.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution. Download (2244Kb) | Preview |
Official URL: http://dx.doi.org/10.1039/D1NA00792K
Abstract
Nacre mimetic films based on 2-Ureido-4[1H]-pyrimidinone (UPy) functionalised graphene oxide (GO) and poly(vinyl alcohol)(PVA) were readily prepared by self-assembly using a vacuum filtration method. The isocynate (UPy) functionalisation of the PVA was confirmed from a combination of Fourier transform infrared spectroscopy (FTIR) and changes in d-spacing from X-ray diffraction (XRD) measurements and, of the GO by solid-state NMR measurements reported by the authors previously. This is the first example of nacre mimetic structures where both the nanoplatelet (GO) and polymer (PVA) components are functionalised with complimentary groups. The resulting films displayed substantial increases in Young’s modulus (E) of 392% (GO1/PVA1), ultimate tensile strength (UTS, σ) of 535% (GO1/PVA1), elongation at break (εmax) of 598% (GO10/PVA5) and tensile toughness (UT) of 1789% (GO1/PVA10) compared to the un-functionalised GO analogues. The binding of UPy to both the GO and the PVA provides multiple routes by which these freestanding nacre mimetic films can dissipate applied loads.
| Item Type: | Journal Article | |||||||||
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| Subjects: | Q Science > QD Chemistry S Agriculture > SH Aquaculture. Fisheries. Angling T Technology > TA Engineering (General). Civil engineering (General) T Technology > TP Chemical technology |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | |||||||||
| Library of Congress Subject Headings (LCSH): | Mother-of-pearl, Polyvinyl alcohol, Fourier transform infrared spectroscopy, X-ray diffraction imaging , Graphene -- Oxidation, Nanocomposites (Materials) | |||||||||
| Journal or Publication Title: | Nanoscale Advances | |||||||||
| Publisher: | Royal Society of Chemistry | |||||||||
| ISSN: | 2516-0230 | |||||||||
| Official Date: | 2022 | |||||||||
| Dates: |
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| Volume: | 4 | |||||||||
| Number: | 1 | |||||||||
| Page Range: | pp. 49-57 | |||||||||
| DOI: | 10.1039/D1NA00792K | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||
| Date of first compliant deposit: | 17 November 2021 | |||||||||
| Date of first compliant Open Access: | 17 November 2021 | |||||||||
| RIOXX Funder/Project Grant: |
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