Bose Suryasarathi, Bhattacharyya Arup R, Khare Rupesh A, Kulkarni Ajit R, Umasankar Patro T, Sivaraman P
Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
Nanotechnology. 2008 Aug 20;19(33):335704. doi: 10.1088/0957-4484/19/33/335704. Epub 2008 Jul 8.
Melt-mixed blends of polyamide 6 and acrylonitrile-butadiene-styrene (PA6/ABS) with multiwall carbon nanotubes (MWNTs) were prepared with the intention to develop conducting composites. A generic strategy, namely specific interactions combined with reactive coupling, was adopted to facilitate and to retain the 'network-like' structure of MWNTs during melt-mixing. This was facilitated by the sodium salt of 6-amino hexanoic acid (Na-AHA) and certain phosphonium based modifiers, where it was envisaged that these modifiers would establish specific interactions (either 'cation-π' or 'π-π' ) with the 'π-electron' clouds of MWNTs, as well as restricting them in the PA6 phase of the blends via reactive coupling. This route eventually led to a remarkable increase in the electrical conductivity and dielectric constant in the blends with MWNTs. Raman, FTIR and TEM investigations further supported these observations.
制备了聚酰胺6与丙烯腈-丁二烯-苯乙烯（PA6/ABS）的熔融共混物以及多壁碳纳米管（MWNTs），旨在开发导电复合材料。采用了一种通用策略，即特定相互作用与反应性偶联相结合，以促进并在熔融共混过程中保留MWNTs的“网络状”结构。6-氨基己酸钠盐（Na-AHA）和某些基于鏻的改性剂促进了这一过程，据设想，这些改性剂将与MWNTs的“π电子”云建立特定相互作用（“阳离子-π”或“π-π”），并通过反应性偶联将它们限制在共混物的PA6相中。这条路线最终导致含MWNTs的共混物的电导率和介电常数显著增加。拉曼光谱、傅里叶变换红外光谱和透射电子显微镜研究进一步支持了这些观察结果。
