通过分子内交叉脱氢偶联改善碳纳米管纱线的导电性和机械性能的化学方法。

Chemical method for improving both the electrical conductivity and mechanical properties of carbon nanotube yarn via intramolecular cross-dehydrogenative coupling.

机构信息

Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), Eunha-ri san 101, Bondong-eup, Wanju-gun, Jeolabuk-do 565-905, Korea.

出版信息

ACS Appl Mater Interfaces. 2013 Aug 28;5(16):7726-30. doi: 10.1021/am4026104. Epub 2013 Aug 19.

DOI:10.1021/am4026104

PMID:23947825

Abstract

Chemical post-treatment of the carbon nanotube fiber (CNTF) was carried out via intramolecular cross-dehydrogenative coupling (ICDC) with FeCl3 at room temperature. The Raman intensity ratio of the G band to the D band (IG/ID ratio) of CNT fiber increased from 2.3 to 4.6 after ICDC reaction. From the XPS measurements, the AC═C/AC-C ratio of the CNT fiber increased from 3.6 to 4.8. It is of keen interest that both the electrical conductivity and tensile strength of CNT yarn improved to 3.5 × 10(3) S/cm and 420 MPa, which is 180 and 200% higher than that of neat CNT yarn.

摘要

通过在室温下用三氯化铁进行分子内交叉脱氢偶联（ICDC）对碳纳米管纤维（CNTF）进行化学后处理。ICDC 反应后，CNTF 的 G 带与 D 带的拉曼强度比（IG/ID 比）从 2.3 增加到 4.6。从 XPS 测量结果可知，CNTF 的 AC═C/AC-C 比从 3.6 增加到 4.8。有趣的是，CNT 纱线的电导率和拉伸强度分别提高到 3.5×10(3) S/cm 和 420 MPa，比纯 CNT 纱线分别提高了 180%和 200%。