Solvent-Tunable Microstructures of Aligned Carbon Nanotube Films

被引：27
作者：
Yu, Xueping [1 ,2 ,3 ]
Zhang, Xiaohua [3 ]
Zou, Jingyun [3 ]
Lan, Zhuyao [3 ]
Jiang, Chunyang [1 ,2 ,3 ]
Zhao, Jingna [3 ]
Zhang, Dengsong [1 ,2 ]
Miao, Menghe [4 ]
Li, Qingwen [3 ]
机构：
[1] Shanghai Univ, Res Ctr Nano Sci & Technol, Shangda Rd 99, Shanghai 200444, Peoples R China
[2] Shanghai Univ, Sch Mat Sci & Engn, Shangda Rd 99, Shanghai 200444, Peoples R China
[3] Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Ruoshui Rd 398, Suzhou 215123, Peoples R China
[4] CSIRO Mfg, 75 Pigdons Rd, Waurn Ponds, Vic 3216, Australia
来源：
ADVANCED MATERIALS INTERFACES | 2016年 / 3卷 / 17期
基金：
中国国家自然科学基金;
关键词：
carbon nanotubes; mechanical properties; microstructure; solvent; volatility; SHEET/BISMALEIMIDE NANOCOMPOSITES; COMPOSITES; FIBERS; CONDUCTIVITY; ULTRASTRONG; PERFORMANCE; ARRAYS;
D O I：
10.1002/admi.201600352
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Solvent wetting is an efficient way to densify carbon nanotube (CNT) assembly structures. Besides the polarity that determines the densification level, the solvent's volatility is found to affect the assembly structure at the micrometer scale. A high volatile solvent like acetone can cause CNTs to simultaneously establish close contact at many intersecting points, and thus creates a strong network structure. This networking ability results in high plasticity for the resulting CNT assembly films. On the other hand, a low volatile solvent like N,N-dimethylformamide reduces the density of connection points due to nonlocalized CNT densification. The networking effect has a strong influence on the film's tensile property by the virtue of the improved plasticity. The acetone-densified CNT film (up to 2.32-3.19 GPa) is about 20% stronger than that densified by ethanol.
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页数：6
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