Exponential decrease of scission length and low tensile strength of bamboo-shaped multi-walled carbon nanotubes under ultrasonication

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Abstract

We report here scission of bamboo-shaped multi-walled carbon nanotubes (BS-MWCNTs) under ultrasonication. As the applied sonication energy increases, mean length of BS-MWCNTs decreases. When sonication energy increases over 500 J/mL, the length of BS-MWCNTs no longer decreases; the limited scission length (L0) is about 1.7 μm for BS-MWCNTs with diameter between 50 and 100 nm. From the L0 of BS-MWCNTs, their tensile strength (σ) is calculated and found to be smaller than that of multi-walled carbon nanotubes (MWCNTs). In addition, exponential decrease of the length of BS-MWCNTs with increasing sonication energy is observed, which is distinguished from typical power law dependence of sonication-induced scission of MWCNTs. These exclusive characteristics in the scission of BS-MWCNTs under ultrasonication are regarded to result from weak binding at discontinuous graphene sheets obtained from forming compartment structures of BS-MWCNTs during growth.

Original languageEnglish
Pages (from-to)507-512
Number of pages6
JournalCurrent Applied Physics
Volume17
Issue number4
DOIs
Publication statusPublished - 2017 Apr 1

Keywords

  • Bamboo-shaped multi-walled carbon nanotubes
  • Sonication-induced scission
  • Tensile strength

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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