Aggregation behavior of single-walled carbon nanotubes in dilute aqueous suspension

Quan Chen; Craig Saltiel; Siva Manickavasagam; Linda S. Schadler; Richard W. Siegel; Hoichang Yang

doi:10.1016/j.jcis.2004.07.028

Aggregation behavior of single-walled carbon nanotubes in dilute aqueous suspension

Quan Chen, Craig Saltiel, Siva Manickavasagam, Linda S. Schadler, Richard W. Siegel, Hoichang Yang

Research output: Contribution to journal › Article › peer-review

157 Scopus citations

Abstract

The aggregation behavior of colloidal single-walled carbon nanotubes (SWNT) in dilute aqueous suspensions was investigated using a novel light scattering measurement technique. The aggregation of SWNT in three suspensions was examined: (1) nanotubes after acid treatment; (2) as-received nanotubes stabilized by a nonionic surfactant; and (3) acid-treated nanotubes with nonionic surfactant. Continuous light scattering measurements of the SWNT suspensions (probing the 38-436 nm length scale) made over two weeks showed that the nanotubes in each sample formed networks with fractal-like structures. The as-received nanotubes were stable over the measurement period, while the acid-treated nanotube suspension showed greater dispersion variability over time, yielding looser structures at large length scales and more compact structures at smaller length scales. The addition of surfactant to the acid-treated suspension significantly enhanced nanotube dispersion.

Original language	English
Pages (from-to)	91-97
Number of pages	7
Journal	Journal of Colloid and Interface Science
Volume	280
Issue number	1
DOIs	https://doi.org/10.1016/j.jcis.2004.07.028
State	Published - 1 Dec 2004
Externally published	Yes

Bibliographical note

Funding Information:
The authors wish to thank Everett Fraser for his assistance with the light scattering measurements. Support for this work came from the Eastman Kodak Company and the Nanoscale Science and Engineering Initiative of the National Science Foundation under NSF Award Number DMR-0117792, and the SBIR Program of the National Science Foundation under NSF Award Number DMI-0110341.

Keywords

Aggregation
Colloid
Fractal dimension
Light scattering
Single-walled carbon nanotube
Suspension

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10.1016/j.jcis.2004.07.028

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title = "Aggregation behavior of single-walled carbon nanotubes in dilute aqueous suspension",

abstract = "The aggregation behavior of colloidal single-walled carbon nanotubes (SWNT) in dilute aqueous suspensions was investigated using a novel light scattering measurement technique. The aggregation of SWNT in three suspensions was examined: (1) nanotubes after acid treatment; (2) as-received nanotubes stabilized by a nonionic surfactant; and (3) acid-treated nanotubes with nonionic surfactant. Continuous light scattering measurements of the SWNT suspensions (probing the 38-436 nm length scale) made over two weeks showed that the nanotubes in each sample formed networks with fractal-like structures. The as-received nanotubes were stable over the measurement period, while the acid-treated nanotube suspension showed greater dispersion variability over time, yielding looser structures at large length scales and more compact structures at smaller length scales. The addition of surfactant to the acid-treated suspension significantly enhanced nanotube dispersion.",

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author = "Quan Chen and Craig Saltiel and Siva Manickavasagam and Schadler, {Linda S.} and Siegel, {Richard W.} and Hoichang Yang",

note = "Funding Information: The authors wish to thank Everett Fraser for his assistance with the light scattering measurements. Support for this work came from the Eastman Kodak Company and the Nanoscale Science and Engineering Initiative of the National Science Foundation under NSF Award Number DMR-0117792, and the SBIR Program of the National Science Foundation under NSF Award Number DMI-0110341.",

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AU - Manickavasagam, Siva

AU - Schadler, Linda S.

AU - Siegel, Richard W.

AU - Yang, Hoichang

N1 - Funding Information: The authors wish to thank Everett Fraser for his assistance with the light scattering measurements. Support for this work came from the Eastman Kodak Company and the Nanoscale Science and Engineering Initiative of the National Science Foundation under NSF Award Number DMR-0117792, and the SBIR Program of the National Science Foundation under NSF Award Number DMI-0110341.

PY - 2004/12/1

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N2 - The aggregation behavior of colloidal single-walled carbon nanotubes (SWNT) in dilute aqueous suspensions was investigated using a novel light scattering measurement technique. The aggregation of SWNT in three suspensions was examined: (1) nanotubes after acid treatment; (2) as-received nanotubes stabilized by a nonionic surfactant; and (3) acid-treated nanotubes with nonionic surfactant. Continuous light scattering measurements of the SWNT suspensions (probing the 38-436 nm length scale) made over two weeks showed that the nanotubes in each sample formed networks with fractal-like structures. The as-received nanotubes were stable over the measurement period, while the acid-treated nanotube suspension showed greater dispersion variability over time, yielding looser structures at large length scales and more compact structures at smaller length scales. The addition of surfactant to the acid-treated suspension significantly enhanced nanotube dispersion.

AB - The aggregation behavior of colloidal single-walled carbon nanotubes (SWNT) in dilute aqueous suspensions was investigated using a novel light scattering measurement technique. The aggregation of SWNT in three suspensions was examined: (1) nanotubes after acid treatment; (2) as-received nanotubes stabilized by a nonionic surfactant; and (3) acid-treated nanotubes with nonionic surfactant. Continuous light scattering measurements of the SWNT suspensions (probing the 38-436 nm length scale) made over two weeks showed that the nanotubes in each sample formed networks with fractal-like structures. The as-received nanotubes were stable over the measurement period, while the acid-treated nanotube suspension showed greater dispersion variability over time, yielding looser structures at large length scales and more compact structures at smaller length scales. The addition of surfactant to the acid-treated suspension significantly enhanced nanotube dispersion.

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Aggregation behavior of single-walled carbon nanotubes in dilute aqueous suspension

Abstract

Bibliographical note

Keywords

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