An in situ fabrication process for highly electrical conductive polyimide/MWCNT composite films using 2,6-diaminoanthraquinone
An in situ fabrication process for highly electrical conductive polyimide/MWCNT composite films using 2,6-diaminoanthraquinone
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DOI：
10.1016/j.compscitech.2013.08.008
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发表时间：
2013-10
影响因子：
9.1
通讯作者：
Yi Chia Huang;June-Hua Lin;I. Tseng;A. Lo;Teng-Yuan Lo;Hsin-Pei Yu;M. Tsai;W. Whang;K. Hsu-
中科院分区：
文献类型：
--
作者：
Yi Chia Huang;June-Hua Lin;I. Tseng;A. Lo;Teng-Yuan Lo;Hsin-Pei Yu;M. Tsai;W. Whang;K. Hsu-
提出了一种原位合成高导电聚酰亚胺/多壁碳纳米管（PI/MWCNT）复合薄膜的方法。该方法的成功是通过添加2，6-二氨基蒽醌（DAAQ）实现的。DAAQ不仅是一种优良的分散剂，可以稳定地分散多壁碳纳米管在溶剂中，而且是一种直接合成PI的单体。FTIR、UV-Vis、拉曼光谱和荧光光谱证实了DAAQ与MWCNT之间存在较强的相互作用。通过含有40 wt.%的PI复合材料实现了55.6S/cm的最高电导率值。的MWCNT。此外，该膜的电导率在热压处理后进一步提高至106 S/cm。在电导率逾渗阈值处的MWCNT含量为0.50重量% (or 0.32体积%）临界指数等于2.52。通过DAAQ衍生的分子开发的原位制造过程也可以应用于合成其他需要二胺结构的聚合物。
We present a valuable in situ fabrication process for synthesizing high electrical conductive polyimide/multiwalled carbon nanotube (PI/MWCNT) composite films. The success of this process was achieved the addition of 2,6-diaminoanthraquinone (DAAQ). The DAAQ is not only an excellent dispersion agent to stably disperse pristine MWCNTs in solvent but also a monomer to directly synthesize PI. The strong interaction between DAAQ with MWCNT was verified by FTIR, UV–Vis, Raman, and fluorescence spectra. The highest value of electrical conductivity of 55.6 S/cm are achieved by the PI composite containing 40 wt.% of MWCNT. Moreover, the electrical conductivity of this film further enhanced to 106 S/cm after the thermal compression process. The MWCNT content at the percolation threshold of conductivity is 0.50 wt.% (or 0.32 vol.%) and the critical exponent is equal to 2.52. The developed in situ fabrication process through DAAQ-derived molecules can also be applied to synthesize other polymers requiring diamine structure.