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Correlation between MWCNT aspect ratio and the mechanical properties of composites of PMMA and MWCNTs
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Mu, Mulan, Teblum, Eti, Figiel, Lukasz, Nessim , Gilbert and McNally, Tony (2018) Correlation between MWCNT aspect ratio and the mechanical properties of composites of PMMA and MWCNTs. Materials Research Express, 5 (4). 045305. doi:10.1088/2053-1591/aab82d
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WRAP-correlation-aspect-ratio-mechanical-composites-Figiel-2018.pdf - Accepted Version - Requires a PDF viewer. Download (2196Kb) | Preview |
Official URL: https://doi.org/10.1088/2053-1591/aab82d
Abstract
The correlation between MWCNT aspect ratio and the quasi-static and dynamic mechanical properties of composites of MWCNTs and PMMA was studied for relatively long MWCNT lengths, in the range 0.3mm to 5mm (aspect ratios up to 5 x 105) and at low loading (0.15wt%). The height of the MWCNTs prepared were modulated by controlling the amount of water vapour introduced in the reactor limiting Ostwald ripening of the catalyst, the formation of amorphous carbon and any increase in CNT diameter. The Tg of PMMA increased by up to 4 ºC on addition of the longest tubes as they have the ability to form physical junctions with the polymer chains which lead to enhanced PMMA-MWCNTs interactions and increased mechanical properties, Young's modulus by 20% on addition of 5mm long MWCNTs. Predictions of the Young's modulus of the composites of PMMA and MWCNT with the Mori-Tanaka theory show that future micromechanical models should account for MWCNT agglomeration and polymer-nanotube interactions as a function of CNT length.
| Item Type: | Journal Article | ||||||||
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| Subjects: | Q Science > QC Physics Q Science > QD Chemistry T Technology > TJ Mechanical engineering and machinery |
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| Divisions: | Faculty of Science > Engineering Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) |
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| Library of Congress Subject Headings (LCSH): | Nanotubes., Polymers., Composite materials., Thermoplastic composites., Nanotubes -- Carbon content. | ||||||||
| Journal or Publication Title: | Materials Research Express | ||||||||
| Publisher: | Institute of Physics Publishing Ltd. | ||||||||
| ISSN: | 2053-1591 | ||||||||
| Official Date: | 11 April 2018 | ||||||||
| Dates: |
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| Date of first compliant deposit: | 21 March 2018 | ||||||||
| Volume: | 5 | ||||||||
| Number: | 4 | ||||||||
| Article Number: | 045305 | ||||||||
| DOI: | 10.1088/2053-1591/aab82d | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Restricted or Subscription Access |
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