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

Title
Significantly Increased Solubility of Carbon Nanotubes in Superacid by Oxidation and Their Assembly into High-Performance Fibers
Authors
김승민정현수김영관이재근이동명
Issue Date
2017-10
Publisher
Small
Citation
VOL 13, NO 38-1701131-8
Abstract
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.
URI
http://pubs.kist.re.kr/handle/201004/66425
ISSN
1613-6810
Appears in Collections:
KIST Publication > Article
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