Control of multiwall carbon nanotubes dispersion in polyamide6 matrix: An assessment through electrical conductivity

被引：159
作者：
Kodgire, Pravin V.
Bhattacharyya, Arup R. [1 ]
Bose, Suryasarathi
Gupta, Nitin
Kulkarni, Ajit R.
Misra, Ashok
机构：
[1] Indian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, India
[2] Indian Inst Technol, Dept Chem Engn, Bombay 400076, Maharashtra, India
来源：
CHEMICAL PHYSICS LETTERS | 2006年 / 432卷 / 4-6期
关键词：
D O I：
10.1016/j.cplett.2006.10.088
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The homogeneous dispersion of carbon nanotubes (CNT) remains a hindrance in exploiting the exceptional properties associated with CNT in polymer/CNT composites. Here we present for the first time the key role of sodium salt of 6-ammohexanoic acid (Na-AHA) in assisting debundling the multiwall carbon nanotubes (MWNT) through specific interactions leading to homogeneous dispersion within polyamide6 (PA6) matrix during melt-mixing. The composite fabricated via this route exhibits low electrical percolation threshold of 0.5 wt% at room temperature, the lowest reported value in this system so far. FTIR and Raman spectroscopy reveal the existence of 'cation-pi' interaction between Na-AHA and MWNT. The phenomenon of reactive coupling between amine functionality of NaAHA and acid end group of PA6 during melt-mixing is also established. (c) 2006 Elsevier B.V. All rights reserved.
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页码：480 / 485
页数：6
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