Ultrasonic Dispersions of Single-Walled Carbon Nanotubes

Niyogi, Sandip; Hamon, Mark A.; Perea, Daniel E.; Kang, Chuan-Zhi; Zhao, Bin; Pal, Sushanta Kumar; Wyant, A. E.; Itkis, Mikhail E.; Haddon, Robert C.

doi:10.1021/jp034866d

Cited by 134 publications

(127 citation statements)

References 49 publications

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“…It is notable however chlorinated aromatic solvents, reported to polymerise under sonication 26,27 , do not appear as outliers. The outlying behaviour of DBE might similarly be due to solvent degradation or alternatively to the extremely high density of DBE compare to other solvents.…”

Section: Methodsmentioning

confidence: 91%

Ultrasound-Assisted SWNTs Dispersion: Effects of Sonication Parameters and Solvent Properties

Cheng¹,

Debnath²,

Gregan³

et al. 2010

J. Phys. Chem. C

171

127

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Ultra-sonication is widely used for preparing Single-Walled Carbon Nanotube (SWNT) dispersions in different solvent media and it has been shown to play a critical role in dispersing and debundling SWNTs. The strong shear force which can exfoliate the SWNT bundles during sonication comes from cavitation, which entails a process of bubble formation, growth and collapse. The efficiency of the cavitation process is closely correlated to many solvent parameters, including vapour pressure, viscosity, surface tension, as well as the sonication frequency, intensity and time. In this study, SWNTs were dispersed in a range of organic solvents assisted by tip sonication. The effects of sonication intensity and time were investigated in ortho-dichlorobenzene (o-DCB) and dimethylformamide (DMF).The aggregation fraction below the dispersion limit of SWNTs in the range of organic solvents was found to be influenced by the solvent parameters, particularly solvent vapour pressure and viscosity. It is demonstrated that the parameters associated with the sonication process rather than solvent solubility 2 parameters govern the dispersion process. It is further confirmed that significant degradation of the SWNTs is affected during the dispersion process.

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Section: Methodsmentioning

confidence: 91%

Ultrasound-Assisted SWNTs Dispersion: Effects of Sonication Parameters and Solvent Properties

Cheng¹,

Debnath²,

Gregan³

et al. 2010

J. Phys. Chem. C

171

127

View full text Add to dashboard Cite

show abstract

“…Some of these techniques include ball milling, 33,40 high shear mixing, 33,[43][44][45] and ultrasonication. [46][47][48][49] In this dissertation, I formed a dispersion of the SWCNTs in isopropyl alcohol (IPA) that was then applied to IM7 to generate the IM7/SWCNT composites described in this thesis.…”

Section: Methods For Dispersing Cntsmentioning

confidence: 99%

Development and thermal properties of carbon nanotube-polymer composites

Jackson

2016

Composites Part B: Engineering

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“…Of the solvents tested, only ODCB (and to a lesser extent methoxybenzene) resulted in effective targeted deposition. Ultrasonication of SWCNT in ODCB has been shown to create a sonopolymer which coats the surface of the nanotubes [20]. Although our method requires less ultrasonication than was reported to cause significant coating by the sonopolymer, inspection of similarly dispersed MWCNTs by TEM has shown that while the nanotubes are still mostly pristine there are isolated sections covered with a thin amorphous coating.…”

Section: Resultsmentioning

confidence: 80%