Single wall carbon nanotube dispersion and exfoliation in polymers

Tetsuya Uchida, Satish Kumar

Research output: Contribution to journalArticle

98 Citations (Scopus)

Abstract

Dispersion and exfoliation of single wall carbon nanotubes (SWNTs) have been studied in poly(acrylonitrile) (PAN), poly(ρ-phenylene benzobisoxazole) (PBO) solutions, and composite fibers using transmission electron microscopy. As a result of polymer assisted dispersion and exfoliation, the average SWNT bundle diameter in SWNT/ PAN (5/95) was 11 nm, while the average diameter for the pristine SWNT bundles was about 30 nm. High resolution TEM of SWNT/PBO (10/90) composite fibers did not reveal the presence of SWNT aggregates or bundles, suggesting SWNT exfoliation as individuals. On the other hand, both oriented and unoriented nanotube bundles have been ob-served in SWNT/PBO samples containing 15 wt % nanotubes. Carbon nanotubes are 10 5 times more radiation resistant than flexible polymers such as polyethylene, and 103 times more resistant than highly radiation resistant polymers such as PBO. Therefore in the high resolution TEM study of nanotube/polymer composites, nanotubes can be observed long after the polymer has been damaged by electron radiation.

Original languageEnglish
Pages (from-to)985-989
Number of pages5
JournalJournal of Applied Polymer Science
Volume98
Issue number3
DOIs
Publication statusPublished - Nov 5 2005

Keywords

  • Carbon nanotube
  • Electron beam irradiation
  • Nanocomposite
  • PAN
  • TEM

ASJC Scopus subject areas

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

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