A comparison of the mechanical properties of fibers spun from different carbon nanotubes

被引：129

作者：

Jia, Jingjing ^{[2
]}

Zhao, Jingna ^{[1
]}

Xu, Geng ^{[1
]}

Di, Jiangtao ^{[1
]}

Yong, Zhenzhong ^{[1
]}

Tao, Yuyu ^{[1
]}

Fang, Chao ^{[2
]}

Zhang, Zuoguang ^{[2
]}

Zhang, Xiaohua ^{[1
]}

Zheng, Lianxi ^{[3
]}

Li, Qingwen ^{[1
]}

机构：

[1] Suzhou Inst Nanotech & Nanobion, Suzhou 215123, Peoples R China

[2] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

[3] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

来源：

CARBON | 2011年 / 49卷 / 04期

基金：

中国国家自然科学基金;

关键词：

YARNS; ARRAYS; STRENGTH; MORPHOLOGY; GROWTH;

D O I：

10.1016/j.carbon.2010.11.054

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：

Spinnable carbon nanotube (CNT) arrays with different CNT structures have been synthesized using different growth methods and carbon sources, and long and stable fibers have been produced. Parameters of the nanotubes such as tube diameter, wall thickness, tube length and level of defects were found to play a more important role in the mechanical properties of the fibers than did the initial tube arrangement. To improve the fiber strength, as well as the modulus, the tubes must be long and have a small diameter and thin walls. The strongest fiber from double- and triple-walled CNTs is 1.23 GPa in strength, and 32% and 221% higher than those from CNTs with similar to 6 and similar to 15 walls (932 and 383 MPa), respectively. The fiber strength can be improved by 25%, up to 1.54 GPa, after poly(vinyl alcohol) infiltration with volume fraction of similar to 20%. Our study also shows that C2H4 is superior to C2H2 as the carbon source for the growth of mainly double- and triple-walled CNTs, and therefore the spinning of high-strength fibers. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1333 / 1339

页数：7

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