Small-Angle Neutron Scattering from Surfactant-Assisted Aqueous Dispersions of Carbon Nanotubes
Малоугловое нейтронное рассеяние в водных дисперсиях углеродных нанотрубок, стабилизированных поверхностно-активным веществом
2004-07-24
SCID: 54.1/9f5caxhq
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cylindrical micellesrandom adsorption modelsingle-walled carbon nanotubessmall-angle neutron scatteringsurfactant-assisted dispersion
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Abstract (AI)
The mechanism of surfactant-assisted dispersion of single-walled carbon nanotubes in water is studied by small-angle neutron scattering. The previously hypothesized formation of cylindrical micelles with the nanotubes forming the core of cylinders is inconsistent with the data presented. The scattering data favor a random structureless adsorption model for the dispersion of the nanotubes.
Key Findings
1
Small-angle neutron scattering was used to investigate how surfactants disperse single-walled carbon nanotubes in water.
2
The measurements instead support a random, structureless surfactant-adsorption model for nanotube dispersion.
3
The previously proposed model of cylindrical micelles with nanotubes forming cylindrical cores is inconsistent with the scattering data.
Research Object
Surfactant-assisted aqueous dispersions of single-walled carbon nanotubes
Research Subject
The dispersion mechanism and structural organization of surfactant adsorption on the nanotubes, including evaluation of cylindrical-micelle versus random structureless adsorption models
Publication Details
Publication Date
2004-07-24
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