Utilizing polymers for shaping the interfacial behavior of carbon nanotubes

Rachel Yerushalmi-Rozen*, Igal Szleifer

*Corresponding author for this work

Research output: Contribution to journalReview article

48 Scopus citations

Abstract

A major obstacle for utilization of carbon nanotubes is their tendency to bundle and pack into ropes that further entangle into networks, rendering the tubes insoluble in aqueous and organic liquids, and thus almost un-processable. As was shown recently, physically adsorbed block-copolymers may be used for exfoliating and dispersing carbon nanotubes in aqueous and organic media. In this approach entropic repulsion among polymeric layers attached to CNT induce steric repulsion among the polymer-decorated tubes. The tube-polymer interactions are relatively weak, do not depend on the detailed chemistry of the interface and their range is tuned by the molecular weight and density of the polymeric layers, rather than by the chemical composition of the monomers. Combining theoretical modeling and experimental studies we demonstrate that this approach may be used for engineering the interfacial behavior of carbon nanotubes in a variety of systems.

Original languageEnglish (US)
Pages (from-to)24-28
Number of pages5
JournalSoft Matter
Volume2
Issue number1
DOIs
StatePublished - Apr 10 2006

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics

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