Dispersion of Multi-Walled Carbon Nanotubes in Polyvinyl Alcohol Aqueous Solution
The homogeneous and stable dispersion of carbon nanotubes (CNTs) in polymer matrix is the crucial problem to prepare polymer/CNTs composite. In this paper, the factors, such as acidic treatment, pH value of solution and surfactant incorporated were discussed. Multi-walled carbon nanotubes (MWNTs) were refluxed for 2h in sulfuric acid/nitric acid mixture. The zeta potentials under different pH were tested by Zetasizer Nano instrument and the results showed that pH=5 was the best for the dispersion of MWNTs in water. Some surfactants were used as dispersant for the polyvinyl alcohol/multi-walled carbon nanotubes (PVA/MWNTs) aqueous solution. The dispersing ability was compared by UV-Vis spectroscopy. The film from MWNTs/PVA aqueous solution was cast and the morphology of that was observed by scanning electron microscopy (SEM).
LIU Jingjing YU Hao ZHU Meifang
College of Material Science and Engineering, Donghua University, Shanghai 201620, P.R.China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua Universit
国际会议
2009 International Conference on Advanced Fibers and Polymer Materials(2009年先进纤维与聚合物材料国际学术会议)
上海
英文
1143-1146
2009-10-21（万方平台首次上网日期，不代表论文的发表时间）