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Epoxy nanocomposites containing magnetite-carbon nanofibers aligned using a weak magnetic field

Wu, Shujing, Ladani, Raj B., Zhang, Jin, Kinloch, Anthony J., Zhao, Zhiheng, Ma, Jun, Zhang, Xuehua, Mouritz, Adrian P., Ghorbani, Kamran and Wang, Chun H. 2015, Epoxy nanocomposites containing magnetite-carbon nanofibers aligned using a weak magnetic field, Polymer, vol. 68, pp. 25-34, doi: 10.1016/j.polymer.2015.04.080.

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Title Epoxy nanocomposites containing magnetite-carbon nanofibers aligned using a weak magnetic field
Author(s) Wu, Shujing
Ladani, Raj B.
Zhang, JinORCID iD for Zhang, Jin orcid.org/0000-0002-4257-8148
Kinloch, Anthony J.
Zhao, Zhiheng
Ma, Jun
Zhang, Xuehua
Mouritz, Adrian P.
Ghorbani, Kamran
Wang, Chun H.
Journal name Polymer
Volume number 68
Start page 25
End page 34
Total pages 10
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2015-06-26
ISSN 0032-3861
Keyword(s) Carbon nanofibers
Epoxy nanocomposites
Magnetic field alignment
Summary Abstract Novel magnetite-carbon nanofiber hybrids (denoted by Fe3O4@CNFs) have been developed by coating carbon nanofibers (CNFs) with magnetite nanoparticles in order to align CNFs in epoxy using a relatively weak magnetic field. Experimental results have shown that a weak magnetic field (∼mT) can align these newly-developed nanofiber hybrids to form a chain-like structure in the epoxy resin. Upon curing, the epoxy nanocomposites containing the aligned Fe3O4@CNFs show (i) greatly improved electrical conductivity in the alignment direction and (ii) significantly higher fracture toughness when the Fe3O4@CNFs are aligned normal to the crack surface, compared to the nanocomposites containing randomly-oriented Fe3O4@CNFs. The mechanisms underpinning the significant improvements in the fracture toughness have been identified, including interfacial debonding, pull-out, crack bridging and rupture of the Fe3O4@CNFs, and plastic void growth in the polymer matrix.
Language eng
DOI 10.1016/j.polymer.2015.04.080
Field of Research 091202 Composite and Hybrid Materials
Socio Economic Objective 861301 Aerospace Equipment
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Grant ID DP140100778
Copyright notice ©2015, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30074167

Document type: Journal Article
Collection: Institute for Frontier Materials
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