Optimization of carbon fiber surfaces for reinforcement in advanced polymer composites

Henderson, Luke, Varley, Russell, Stojcevski, Filip, Randall, James, Eyckens, Daniel, Demir, Baris and Walsh, Tiffany 2018, Optimization of carbon fiber surfaces for reinforcement in advanced polymer composites, in ASC 2018 : Proceedings of the 33rd Technical Conference of the American Society for Composites, American Society for Composites, Dayton, Oh., pp. 2492-2498.

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Title Optimization of carbon fiber surfaces for reinforcement in advanced polymer composites
Author(s) Henderson, LukeORCID iD for Henderson, Luke orcid.org/0000-0002-4244-2056
Varley, RussellORCID iD for Varley, Russell orcid.org/0000-0002-3792-1140
Stojcevski, FilipORCID iD for Stojcevski, Filip orcid.org/0000-0003-3117-0750
Randall, James
Eyckens, Daniel
Demir, BarisORCID iD for Demir, Baris orcid.org/0000-0003-4329-235X
Walsh, TiffanyORCID iD for Walsh, Tiffany orcid.org/0000-0002-0233-9484
Conference name American Society for Composites. Conference (2018 : 33rd : Seattle, Washington)
Conference location Seattle, Washington
Conference dates 2018/09/24 - 2018/09/26
Title of proceedings ASC 2018 : Proceedings of the 33rd Technical Conference of the American Society for Composites
Editor(s) Waas, A.
Publication date 2018
Start page 2492
End page 2498
Total pages 7
Publisher American Society for Composites
Place of publication Dayton, Oh.
Summary © 2018 by DEStech Publications, Inc. All rights reserved. This paper summarizes recent efforts within our research group to optimize the interfacial adhesion of carbon fiber reinforced polymer composites (CFRPs). This effort has been approached by several avenues including surface modification of carbon fibers, and the use of molecular dynamics to determine key interfacial interactions determining optimal adhesion. Typically, surface manipulation of carbon fibers is carried out using reductive electrochemical techniques, employing irreversible single electron reduction of aryldiazonium salts. Though recent efforts have shown oxidative surface grafting of carbon fibers is possible using the Kolbe decarboxylation reaction. Both approaches create a fiber which possesses a covalently bound surface modification, able to present a myriad of chemistries to the supporting resin. Determination of interfacial shear strength (IFSS), using single filament fragmentation in epoxy resin, has shown IFSS gains of over 150%, relative to pristine unsized fiber. Interrogation of the fiber-matrix interface using molecular dynamics simulation has shown that a large degree of the IFSS gains are derived from the molecular 'drag' effect of the surface bound molecules through the polymer phase. Further benefits of this approach can also be realized by combining the surface manipulation techniques with novel sizing agents, able to plasticize the localized resin around the carbon fiber, giving a gradient interphase. When used in concert, the synergistic effects of surface modification and interphase manipulation has realized IFSS gains >250% relative to control fibers.
ISBN 9781510872073
Language eng
Field of Research 030603 Colloid and Surface Chemistry
HERDC Research category E1 Full written paper - refereed
Grant ID DP180100094
Copyright notice ©2018, DEStech Publications
Persistent URL http://hdl.handle.net/10536/DRO/DU:30121072

Document type: Conference Paper
Collections: Institute for Frontier Materials
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