TY - JOUR
T1 - A comparison of the mechanical properties of fibers spun from different carbon nanotubes
AU - Jia, Jingjing
AU - Zhao, Jingna
AU - Xu, Geng
AU - Di, Jiangtao
AU - Yong, Zhenzhong
AU - Tao, Yuyu
AU - Fang, Chao
AU - Zhang, Zuoguang
AU - Zhang, Xiaohua
AU - Zheng, Lianxi
AU - Li, Qingwen
N1 - Funding Information:
Financial support from Hundred Talent Program for Q. Li and Knowledge Innovation Program (No. KJCX2.YW.M12) by Chinese Academy of Sciences, International Collaboration Project (No. 2009DFB50150) by Ministry of Science and Technology, and National Natural Science Foundation of China (No. 10972152) is gratefully acknowledged. One author (J.J.) is also supported by the Weishi Foundation for Yong Teacher by Beihang University (No. YWF-10-02-008). We thank Electron Microscope Center of Suzhou Institute of Nano-Tech and Nano-Bionics for the SEM and TEM characterization of our samples. We also thank Prof. Yuntian Zhu for providing the C 2 H 2 -CM arrays. The first two authors (J.J. and J.Z.) contributed equally to this work.
PY - 2011/4
Y1 - 2011/4
N2 - 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 ∼6 and ∼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 ∼20%. Our study also shows that C2H4 is superior to C 2H2 as the carbon source for the growth of mainly double- and triple-walled CNTs, and therefore the spinning of high-strength fibers.
AB - 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 ∼6 and ∼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 ∼20%. Our study also shows that C2H4 is superior to C 2H2 as the carbon source for the growth of mainly double- and triple-walled CNTs, and therefore the spinning of high-strength fibers.
UR - http://www.scopus.com/inward/record.url?scp=78751581722&partnerID=8YFLogxK
U2 - 10.1016/j.carbon.2010.11.054
DO - 10.1016/j.carbon.2010.11.054
M3 - Article
AN - SCOPUS:78751581722
SN - 0008-6223
VL - 49
SP - 1333
EP - 1339
JO - Carbon
JF - Carbon
IS - 4
ER -