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Functionalizing multi-walled carbon nanotubes with poly(oxyalkylene)-amidoamines

机译:用聚(氧化烯)-酰胺基胺功能化多壁碳纳米管

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摘要

Multi-walled carbon nanotubes were functionalized by sequential HNO3 oxidation and amidation with high-molecular-weight poly( oxyalkylene)-amines ( 400 - 2000 g mol(-1)) as themodifying agents. These nanotube-tethering organic portions include two types of polyether backbone, hydrophobic poly( oxypropylene) (POP) and hydrophilic poly( oxyethylene) (POE). By varying these hydrophilic or hydrophobic structures and their lengths, the organically modified nanotubes can be tailored to have different dispersing properties, either in water or in organic solvents. Homogeneous dispersion further allowed the observation of the detailed morphology of individual nanotubes and their aggregated forms by using atomic force microscopy and field emission-scanning electron microscopy analyses.
机译:多壁碳纳米管通过连续的HNO3氧化和高分子量聚(氧化烯)-胺(400-2000 g mol(-1))酰胺化来官能化。这些束缚纳米管的有机部分包括两种类型的聚醚主链,疏水性聚氧化丙烯(POP)和亲水性聚氧化乙烯(POE)。通过改变这些亲水或疏水结构及其长度,有机改性的纳米管可以被定制为在水中或在有机溶剂中具有不同的分散性能。均匀分散还可以通过使用原子力显微镜和场发射扫描电子显微镜分析来观察各个纳米管的详细形态及其聚集形式。

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