Citation: Ai Zhong XU, Ming Shu YANG, Qiang WU, Xiao Ming HU, Lei JIANG. Flow Field Induced Steady Alignment of Oxidized Multi-walled Carbon Nanotubes[J]. Chinese Chemical Letters, ;2005, 16(6): 849-852. shu

Flow Field Induced Steady Alignment of Oxidized Multi-walled Carbon Nanotubes

Ai Zhong XU ^1,2,3, ,
Ming Shu YANG ² ,
Qiang WU ¹ ,
Xiao Ming HU ³ ,
Lei JIANG ³

1.
School of Resources and Safety Engineering, China University of Mining & Technology, Beijing 100083;
2.
Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Science, Beijing 100080;
3.
Key Laboratory of Organic Solid, Institute of Chemistry, Chinese Academy of Science, Beijing 100080

Received Date: 29 June 2004

The steady ordered micro-ribbons of oxidized multi-walled carbon nanotubes (MWNTs)were obtained through micro-aperture PTFE membrane by vacuum filtration. After treatment by mixture of concentrated nitric acid and sulfuric acid, the surface functional groups modified MWNTs can be easily dispersed to form a homogeneous suspension. It is found that the steady micro-ribbons existed in the films obtained by vacuum filtration of the suspension. The filtration formed steady flow field and induced steady alignment of oxidized MWNTs. The chemical treatment of MWNTs forming strong interaction between MWNTs is necessity to keep steady of the micro-ribbons microstructure.
- Carbon nanotubes (CNTs),
- oxidation,
- alignment,
- flow fields
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