BROWSE

Related Researcher

Author's Photo

Chae, Han Gi
Polymer nano-composites and Carbon Fiber Laboratory (P&C Lab)
Research Interests
  • Polymer Physics/ Processing, Carbon Nano-materials, Ultra high performance/ multifuctional nano-composites, Smart textile/ fiber

ITEM VIEW & DOWNLOAD

Structural changes during deformation in carbon nanotube-reinforced polyacrylonitrile fibers

Cited 18 times inthomson ciCited 22 times inthomson ci
Title
Structural changes during deformation in carbon nanotube-reinforced polyacrylonitrile fibers
Author
Wang, WenjieMurthy, N. SanjeevaChae, Han GiKumar, Satish
Keywords
Polyacrylonitrile; Nanocomposites; Deformation
Issue Date
2008-04
Publisher
ELSEVIER SCI LTD
Citation
POLYMER, v.49, no.8, pp.2133 - 2145
Abstract
Structural changes during deformation in solution- and gel-spun polyacrylonitrile (PAN) fibers prepared with multi- and single-wall carbon nanotubes, and vapor-grown carbon nano-fibers were investigated using synchrotron X-ray diffraction data. Deformation of carbon nanotubes (CNTs) contributes to the increased modulus. CNTs, in addition to their mere presence as reinforcement, were found to alter the response of the PAN matrix to stress and thus enhance the performance of the composite. CNTs facilitate the orientation of the PAN crystals during deformation, and increase the load transferred to PAN crystals as evidenced by their increased lateral and axial strains at 75 °C. The monotonical decrease in PAN interchain spacing with the fiber strain was accompanied by a reversible helix to zigzag conformational change as well as by changes in the axial repeats of the two conformations. These changes were much larger in gel-spun fibers than in solution-spun fibers, indicating more effective load transfer in gel-spun fibers.
URI
Go to Link
DOI
10.1016/j.polymer.2008.02.035
ISSN
0032-3861
Appears in Collections:
MSE_Journal Papers
Files in This Item:
1-s2.0-S003238610800178X-main.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU