原位聚合法制备碳纳米管/聚硅烷复合材料的研究

In this paper, by using Wurtz reaction, carbon nanotubes/poly(methyl phenyl-methyl) silane composites are synthesized via in-situ polymerization successfully. In order to get the best experiment program, the orthogonal experiment is applied in the preparation of carbon nanotubes/poly(methyl phenyl-methyl)silane composites. The new composites are analyzed and characterized by IR and TEM. All the characteristic absorption peaks of benzene ring in the composite material move to the lower wave number space compared with the pure polysilane in IR. The surface of carbon nanotubes in the compounds is enshrouded by comparatively thick polysilane obviously. The suspending stability of dispersive system was investigated through sedimentation experiment, and the results show that suspending stability of the composite material is better comparing with carbon nanotubes. Through the dispersion, we can investigate the composite situation. Through the thermal weight and conductivity measurement of products, we can test the performance. The results show that the conductivity of the composite material is three orders of magnitude higher than that of polysilane. All the results demonstrate that the carbon nanotubes/poly(methyl phenyl-methyl)silane composites are assembled entirely through π-π stacking interactions.