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首先将多壁碳纳米管(MWNTs)通过混酸氧化处理,得到氧化多壁碳纳米管(MWNTs-COOH),再将其与乙二胺(EDA)在N,N’-二环己基碳二亚胺(DCC)与4-二甲氨基吡啶(DMAP)的复合催化体系下反应,制得氨化多壁碳纳米管(MWNTs-NH2),并通过场发射扫描电镜观察、傅里叶红外光谱分析、热失重分析、X射线衍射分析、拉曼光谱分析等测试方法对制得的MWNTs-NH2进行结构性能表征。结果表明:通过氧化处理后,MWNTs上引入了羧基,且其长度变短,同时处理后其结构受到一定程度的破坏;通过氨化处理后,MWNTs上引入了酰胺键,MWNTs上乙二胺的接枝率为7.46%,氨化处理过程并未破坏MWNTs-COOH的结构。
Firstly, multi-walled carbon nanotubes (MWNTs) are oxidized by mixed acid to obtain oxidized MWNTs-COOH, and then reacted with ethylenediamine (EDA) in N, N’-dicyclohexylcarbodiimide (MWNTs-NH2) were synthesized by the reaction of 4-dimethylaminopyridine (DCC) and 4-dimethylaminopyridine (DMAP). The catalytic activity of MWNTs-NH2 was investigated by field emission scanning electron microscopy and Fourier transform infrared spectroscopy , Thermal gravimetric analysis, X-ray diffraction analysis, Raman spectroscopy and other test methods for the performance of the obtained MWNTs-NH2 structural characterization. The results showed that the carboxyl groups were introduced into the MWNTs and the length of the MWNTs was shortened. At the same time, the structure of the MWNTs was destroyed to a certain extent. After the ammoniation treatment, the amide bonds were introduced into the MWNTs and the ethylenediamine The grafting rate was 7.46%. The ammoniation process did not destroy the structure of MWNTs-COOH.