Macroscopic fibers of well-aligned carbon nanotubes by wet spinning

被引：143

作者：

Zhang, Shanju ^{[1
]}

Koziol, Krzysztof K. K. ^{[1
]}

Kinloch, Ian A. ^{[1
]}

Windle, Alan H. ^{[1
]}

机构：

[1] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England

来源：

SMALL | 2008年 / 4卷 / 08期

基金：

英国工程与自然科学研究理事会;

关键词：

composites; fibers; liquid crystallinity; nanotubes;

D O I：

10.1002/smll.200700998

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A simple process to spin fibers consisting of multi-walled carbon nanotubes (CNTs) directly from their lyotropic liquid-crystalline phase is reported. Ethylene glycol is used as the lyotropic solvent, enabling a wider range of CNT types to be spun than previously. Fibers spun with CNTs and nitrogen-doped CNTs are compared. X-ray analysis reveals that nitrogen-doped CNTs have a misalignment of only +/- 7.8 degrees to the fiber axis. The tensile strength of the CNT and nitrogen-doped CNT fibers is comparable but the modulus and electrical conductivity of the are lower. The electrical conductivity of both types of CNT fibers is found to be highly anisotropic. The, p results are discussed in context of the microstructure of the CNTs and fibers.

引用

页码：1217 / 1222

页数：6

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