Lubrication of poly(vinyl alcohol) chain orientation by carbon nano-chips in composite tapes

Kenan Song, Yiying Zhang, Jiangsha Meng, Marilyn L. Minus

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

The extraordinary structural properties of graphene and carbon nanotube materials motivate the development of practical methods for their use in fabricating continuous, strong, and tough composite fibers. Poly(vinyl alcohol) (PVA)/carbon nano-chip fiber (CNCF) composite tapes with 0.5 wt % loading show that Young's modulus, tensile strength, and toughness are increased by 585%, 653%, and 20%, respectively as compared to the control (PVA) tapes. Nano-chips exfoliated from the CNCF during processing, lubricate polymer chain alignment, and orientation during drawing, where composite tapes could be drawn to higher draw ratios compared with the control tapes. As a result, the Herman's orientation factor (f) increased from 0.5 (control tape) to 0.8 (composite tape). Theoretical analysis shows ∼ 16 vol % of the composite tapes consists of fully oriented PVA chains, which contributes to its exceptional mechanical performance. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

Original languageEnglish (US)
Pages (from-to)2977-2982
Number of pages6
JournalJournal of Applied Polymer Science
Volume127
Issue number4
DOIs
StatePublished - Feb 15 2013
Externally publishedYes

Keywords

  • PVA
  • crystallinity
  • fibers
  • nano-composites
  • nanotubes
  • tapes

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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