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利用氧等离子处理方法,改变处理时间,制备表面接枝官能团的功能化碳纳米管,研究氧等离子处理时间对碳纳米管表面功能化的影响。采用场发射扫描电镜(SEM)对改性后的碳纳米管的表面形貌进行表征,结果表明经氧等离子处理后的碳纳米管分散均匀,团聚现象减弱。采用X射线光电子能谱分析仪表征碳纳米管表面元素的含量,结果表明延长处理时间,可以有效提升碳纳米管表面的氧含量,当处理时间为15min时,表面氧含量最大,碳纳米管表面接枝率达到7.9%。
The effect of oxygen plasma treatment time on the surface functionalization of carbon nanotubes was investigated by oxygen plasma treatment and the treatment time was changed to prepare functionalized carbon nanotubes with surface grafted functional groups. The surface morphology of the modified carbon nanotubes was characterized by field emission scanning electron microscopy (SEM). The results showed that carbon nanotubes dispersed by oxygen plasma were uniformly dispersed and the agglomeration phenomenon was weakened. X-ray photoelectron spectroscopy (XPS) was used to characterize the content of elements on the surface of carbon nanotubes. The results show that the oxygen content on the surface of carbon nanotubes can be effectively increased by prolonging the treatment time. When the treatment time is 15 min, the surface oxygen content is the highest, Grafting rate of 7.9%.