Exponential decrease of scission length and low tensile strength of bamboo-shaped multi-walled carbon nanotubes under ultrasonication
- Authors
- Jang, Jae-Won; Lee, Cheol Eui; Lee, Cheol Jin
- Issue Date
- 4월-2017
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Bamboo-shaped multi-walled carbon; nanotubes; Tensile strength; Sonication-induced scission
- Citation
- CURRENT APPLIED PHYSICS, v.17, no.4, pp.507 - 512
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- CURRENT APPLIED PHYSICS
- Volume
- 17
- Number
- 4
- Start Page
- 507
- End Page
- 512
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/84004
- DOI
- 10.1016/j.cap.2017.01.012
- ISSN
- 1567-1739
- 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 (L-0) is about 1.7 mu m for BS-MWCNTs with diameter between 50 and 100 nm. From the L-o of BS-MWCNTs, their tensile strength (sigma*) is calculated and found to be smaller than that of multi-walled carbon nanotubes (MWCNT5). 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. (C) 2017 Elsevier B.V. All rights reserved.
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