Significantly Increased Solubility of Carbon Nanotubes in Superacid by Oxidation and Their Assembly into High-Performance Fibers

被引：46

作者：

Lee, Jaegeun ^{[1
]}

Lee, Dong-Myeong ^{[1
,2
]}

Kim, Young-Kwan ^{[1
]}

Jeong, Hyeon Su ^{[1
]}

Kim, Seung Min ^{[1
]}

机构：

[1] Korea Inst Sci & Technol, Inst Adv Composite Mat, 92 Chudong Ro, Wanju Gun 55324, Jeonbuk, South Korea

[2] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, 291 Daehak Ro, Daejeon 34141, South Korea

来源：

SMALL | 2017年 / 13卷 / 38期

基金：

新加坡国家研究基金会;

关键词：

CONDUCTIVITY; PURIFICATION; STRENGTH; YARNS; SWNTS;

D O I：

10.1002/smll.201701131

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This study demonstrates that small amount of oxygen incorporated into carbon nanotubes (CNTs) during the purification process greatly increases their solubility in chlorosulfonic acid (CSA). Using as-purchased and unpurified CNT powders, the optimal purification process is established to significantly increase the solubility of CNTs in CSA, and spin CNT fibers with high mechanical strength (0.84 N tex(-1)) and electrical conductivity (1.4 MS m(-1)) from the CNT liquid crystal dope with high concentration of CNTs in CSA. The knowledge obtained here may guide development of a way to dissolve extremely long CNTs at high concentration and thereby to enable production of CNT fibers with ultimate properties.

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页数：8

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