Mechanics of carbon nanotube scission under sonication
نویسندگان
چکیده
منابع مشابه
Mechanics of carbon nanotube scission under sonication.
As-produced carbon nanotubes come in bundles that must be exfoliated for practical applications in nanocomposites. Sonication not only causes the exfoliation of nanotube bundles but also unwanted scission. An understanding of how precisely sonication induces the scission and exfoliation of nanotubes will help maximising the degree of exfoliation while minimising scission. We present a theoretic...
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A dispersion of individualised carbon nanotubes is commonly obtained by means of sonication. Under sonication bundles of nanotubes are debundled, a process known as exfoliation. During sonication small bubbles within a liquid are brought into oscillation by an acoustic field. Under certain conditions these oscillations can end in the violent collapse of the bubble. This disruptive process dispe...
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We propose a simple model to describe the cavitation-induced breakage of mesoscale filaments during their sonication in solution. The model predicts a limiting length below which scission no longer occurs. This characteristic length is a function of the tensile strength and diameter of the filament, as well as the solvent viscosity and cavitation parameters. We show that the model predicts accu...
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ژورنال
عنوان ژورنال: The Journal of Chemical Physics
سال: 2014
ISSN: 0021-9606,1089-7690
DOI: 10.1063/1.4884823