Macroscopic Nanotube Fibers Spun from Single-Walled Carbon Nanotube Polyelectrolytes
Macroscopic Nanotube Fibers Spun from Single-Walled Carbon Nanotube Polyelectrolytes
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DOI：
10.1021/nn502552q
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发表时间：
2014-09-01
期刊：
影响因子：
17.1
通讯作者：
Marti, Angel A.
中科院分区：
文献类型：
--
作者：
Jiang, Chengmin;Saha, Avishek;Marti, Angel A.
在这项工作中，单壁碳纳米管（SWCNT）纤维是由在二甲亚砜中由冠醚稳定的单壁碳纳米管聚电解质分散体制备的，并在水溶液中凝固。在偏光显微镜下，swcnts多电解质分散体的浓度高达52 mg/mL，并表现出液晶行为。制备的swcnts纤维整齐（即不会与聚合物形成复合材料），抗拉强度高达124 MPa，杨氏模量为14 GPa。这种抗拉强度与由强酸纺成的swcnts纤维相当。用碘掺杂得到了10(4)S/m左右的导电率。
In this work, single-walled carbon nanotube (SWCNT) fibers were produced from SWCNT polyelectrolyte dispersions stabilized by crown ether in dimethyl sulfoxide and coagulated into aqueous solutions. The SWCNT polyelectrolyte dispersions had concentrations up to 52 mg/mL and showed liquid crystalline behavior under polarized optical microscopy. The produced SWCNT fibers are neat (i.e., not forming composites with polymers) and showed a tensile strength up to 124 MPa and a Young's modulus of 14 GPa. This tensile strength is comparable to those of SWCNT fibers spun from strong acids. Conductivities on the order of 10(4) S/m were obtained by doping the fibers with iodine.