Ultrasound-Assisted SWNTs Dispersion: Effects of Sonication Parameters and Solvent Properties
By Qiaohuan Cheng, Sourabhi Debnath, E. Gregan, H. Byrne. 2010
199 citations recorded by the source corpus.
Ultrasonication 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 that 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 vapor pressure, viscosity, and 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 o-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 vapor pressure and viscosity. It is demonstrated that the ...
Subfields: Biomedical Engineering, Cellular and Molecular Neuroscience, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/64939731e9ba29b1a8b05601c6b4bcc7237557a6
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In Biomedical Engineering
In Materials Chemistry
Citations in the corpus
- Recent progress in dispersion of palygorskite crystal bundles for nanocomposites (2016, background): “low-viscous liquid, which is favorable to the disaggregation of Pal crystal bundles or aggregates (Cheng et al., 2010).”