Toughening of epoxy matrices with reduced single-walled carbon nanotubes

Download
  1. (PDF, 1 MB)
  2. Get@NRC: Toughening of epoxy matrices with reduced single-walled carbon nanotubes (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1021/am200523z
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleACS Applied Materials & Interfaces
Volume3
Issue7
Pages9
Subjectreduced SWCNT; epoxy; composite; toughness
AbstractReduced single-walled carbon nanotubes (r-SWCNT) are shown to react readily at room temperature under inert atmosphere conditions with epoxide moieties, such as those in triglycidyl p-amino phenol (TGAP), to produce a soft covalently bonded interface around the SWCNT. The soft interface is compatible with the SWCNT-free cross-linked cured matrix and acts as a toughener for the composite. Incorporation of 0.2 wt % r-SWCNT enhances the ultimate tensile strength, toughness and fracture toughness by 32, 118, and 40%, respectively, without change in modulus. A toughening rate (dKIC/dwtf) of 200 MPa m0.5 is obtained. The toughening mechanism is elucidated through dynamic mechanical analyses, Raman spectroscopy and imaging, and stress–strain curve analyses. The method is scalable and applicable to epoxy resins and systems used commercially.
Publication date
LanguageEnglish
AffiliationNRC Steacie Institute for Molecular Sciences; NRC Institute for Aerospace Research; National Research Council Canada
Peer reviewedYes
NPARC number19739636
Export citationExport as RIS
Report a correctionReport a correction
Record identifierad1f5bc7-031d-4217-a75f-ceb2484db194
Record created2012-04-02
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)