On diffusion of single-walled carbon nanotubes

V. Ya Rudyak, D. S. Tretiakov

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The study is aimed at investigating the diffusion of single-walled nanotubes in liquids with the weight concentration of nanotubes varied from 0.00001 to 0.01%. Water solutions of sodium dodecylbenzene sulfate and polyvinylpyrrolidone, which are usually used as surfactants, are applied here as a carrier liquid. Their concentration is either equal to the concentration of nanotubes or twice greater. Depending on the concentration, the diffusion coefficient of nanotubes is found to change from 1.02·10−11 to 0.7·10−12 m2/s. Based on the data on the diffusion coefficient, the effective hydrodynamic size of nanotubes and their length are retrieved. The efficiency of nanotube separation by means of centrifugation and the changes in their characteristics during long-term storage are discussed.

Original languageEnglish
Pages (from-to)847-855
Number of pages9
JournalThermophysics and Aeromechanics
Volume27
Issue number6
DOIs
Publication statusPublished - Nov 2020

Keywords

  • diffusion
  • dynamic light scattering
  • nanofluid
  • single-walled carbon nanotubes

OECD FOS+WOS

  • 1.07 OTHER NATURAL SCIENCES
  • 1.01 MATHEMATICS
  • 2.03 MECHANICAL ENGINEERING

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