Small angle neutron scattering from single-wall carbon nanotube suspensions: evidence for isolated rigid rods and rod networks

被引：107

作者：

Zhou, W

Islam, MF

Wang, H

Ho, DL

Yodh, AG

Winey, KI

Fischer, JE ^{[1
]}

机构：

[1] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA

[2] Univ Penn, Res Struct Matter Lab, Philadelphia, PA 19104 USA

[3] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

[4] Michigan Technol Univ, Dept Mat Sci & Engn, Houghton, MI 49931 USA

[5] Natl Inst Stand & Technol, Ctr Neutron Res, Gaithersburg, MD 20899 USA

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 384卷 / 1-3期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

D O I：

10.1016/j.cplett.2003.11.106

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report small angle neutron scattering (SANS) from dilute suspensions of purified individual single wall carbon nanotubes (SWNTs) in D2O with added sodium dodecylbenzene sulfonate ionic surfactant. The scattered intensity scales as Q(-1) for scattered wave vector, Q, in the range 0.005 < Q < 0.02 Angstrom(-1). The Q(-1) behavior is characteristic of isolated rigid rods. A crossover of the scattered intensity power law dependence from Q(-1) to Q(-2) is observed at similar to0.004 Angstrom(-1), suggesting the SWNTs form a loose network at 0.1 wt% with a mesh size of similar to160 nm. SANS profiles from several other dispersions of SWNTs do not exhibit isolated rigid rod behavior; evidently the SWNTs in these systems are not isolated and form aggregates. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：185 / 189

页数：5

共 15 条

[1] Gas-phase production of carbon single-walled nanotubes from carbon monoxide via the HiPco process: A parametric study [J].

Bronikowski, MJ ;

Willis, PA ;

Colbert, DT ;

Smith, KA ;

Smalley, RE .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A, 2001, 19 (04) :1800-1805

[2]

De Gennes PG., 1979, SCALING CONCEPTS POL

[3] Coagulation method for preparing single-walled carbon nanotube/poly(methyl methacrylate) composites and their modulus, electrical conductivity, and thermal stability [J].

Du, FM ;

Fischer, JE ;

Winey, KI .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2003, 41 (24) :3333-3338

[4]

Fainerman V. B., 2001, SURFACTANTS CHEM INT

[5]

Feigin L., 1987, NEUTRON SCATTERING, V1, DOI 10.1021/jp051470o.s001

[6]

HOBBIE EK, 2003, NIST NASA PUR DISP M

[7] High weight fraction surfactant solubilization of single-wall carbon nanotubes in water [J].

Islam, MF ;

Rojas, E ;

Bergey, DM ;

Johnson, AT ;

Yodh, AG .

NANO LETTERS, 2003, 3 (02) :269-273

[8]

KRISHNAMOORTI R, UNPUB MACROMOLECULES

[9]

LIFSHITZ EM, 1980, THEORY ELASTICITY

[10] Large-scale purification of single-wall carbon nanotubes: process, product, and characterization [J].

Rinzler, AG ;

Liu, J ;

Dai, H ;

Nikolaev, P ;

Huffman, CB ;

Rodriguez-Macias, FJ ;

Boul, PJ ;

Lu, AH ;

Heymann, D ;

Colbert, DT ;

Lee, RS ;

Fischer, JE ;

Rao, AM ;

Eklund, PC ;

Smalley, RE .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1998, 67 (01) :29-37

← 1 2 →