Weak polyelectrolyte control of carbon nanotube dispersion in water

Jaime C. Grunlan, Lei Liu, Oren Regev

Research output: Contribution to journalLetterpeer-review

54 Scopus citations

Abstract

The dispersion of nanotubes by pH-responsive polymers (i.e., weak polyelectrolytes) enables the macroscopic properties of aqueous suspensions to be tuned. Microstructural changes were achieved as a function of pH in aqueous suspensions containing single-walled carbon nanotubes and imaged by cryogenic-TEM. Clear evidence of pH-sensitive nanotube dispersion is shown. We expect that many useful properties of these nanotube-polymer systems could be sensitive to microstructure, making this technique important for aqueous processing of carbon nanotubes and macroscopic tailoring of solid polymer nanocomposite behavior.

Original languageEnglish
Pages (from-to)346-349
Number of pages4
JournalJournal of Colloid and Interface Science
Volume317
Issue number1
DOIs
StatePublished - 1 Jan 2008

Keywords

  • Cryo-TEM
  • Dispersion
  • Nanotube
  • Polyelectrolyte
  • Viscosity
  • pH-responsive

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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