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采用溶液共混法制备了多壁碳纳米管-壳聚糖(MWNTs-CS)复合物,用透射电子显微镜(TEM)、傅里叶变换红外光谱仪(FT-IR)和紫外可见分光光度计(UV-VIS)对产物进行了表征和分析,讨论溶液温度和pH值对MWNTs-CS稳定性的影响。研究表明,壳聚糖成功地修饰到碳纳米管表面,部分缠绕MWNTs,而MWNTs本身结构没有发生改变,并且MWNTs-CS在水中的溶解性得到了很大的提高。随着溶液温度的增加和pH值的减少,壳聚糖可以从MWNTs-CS上释放。在溶液温度为20℃以及pH值为10时,壳聚糖的修饰效率较高。
Multiwalled carbon nanotube-chitosan (MWNTs-CS) composites were prepared by solution blending method and characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR) and UV-vis spectrophotometer UV-VIS) were used to characterize and analyze the products. The effects of solution temperature and pH value on the stability of MWNTs-CS were discussed. The results show that the chitosan has been successfully modified to the surface of carbon nanotubes and partially entangled with MWNTs. The structure of MWNTs has not changed, and the solubility of MWNTs-CS in water has been greatly improved. As the temperature of the solution increased and the pH decreased, chitosan could be released from MWNTs-CS. Chitosan has high modification efficiency at a solution temperature of 20 ° C and a pH of 10.