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.
Bibliographical noteFunding Information:
This work was supported by a Research Grant of Pukyong National University (2015Year).
© 2017 Elsevier B.V.
- Bamboo-shaped multi-walled carbon nanotubes
- Sonication-induced scission
- Tensile strength
ASJC Scopus subject areas
- Materials Science(all)
- Physics and Astronomy(all)