Acta Phys. -Chim. Sin. ›› 2015, Vol. 31 ›› Issue (10): 1991-1996.doi: 10.3866/PKU.WHXB201509073

• PHYSICAL CHEMISTRY OF MATERIALS • Previous Articles     Next Articles

Influence of Soldium Lignosulfonate with Different Molecular Weights on the Dispersion of Multiwalled Carbon Nanotubes

Huang-Qing. YE1,Yong-Hong. DENG1,Yan. YAN2,Mei-Jie. ZHANG2,Yong. QIAN1,Xue-Qing. QIU1,*()   

  1. 1 School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
    2 Cnano (Zhenjiang) Technology Limited, Zhenjiang 212000, Jiangsu Province, P. R. China
  • Received:2015-07-02 Published:2015-10-10
  • Contact: Xue-Qing. QIU E-mail:xueqingqiu66@163.com
  • Supported by:
    The project was supported by the National Natural Science Foundation of China(21436004);The project was supported by the National Natural Science Foundation of China(21374032)

Abstract:

The influence of sodium lignosulfonate (SLS) fractions with different molecular weights on the adsorption characteristics of multi-walled carbon nanotubes (MWCNTs) and their dispersion performance was studied using gel permeation chromatography (GPC), UV-Vis spectroscopy, elementary analysis, Fourier transform infrared (FT-IR) spectroscopy, zeta potential analysis, and scanning electron microscopy (SEM). The results indicate that SLS with higher molecular weight disperse MWCNTs better and that dispersed MWCNTs exhibit lower specific resistance and increased conductivity. It is supposed that SLS fraction with higher molecular weight has more aromatic rings, thus accounting for stronger π-π interactions with MWCNTs and increased adsorption amount.

Key words: Lignosulfonate, Molecular weight, Carbon nanotube, Adsorption, Dispersion

MSC2000: 

  • O648