Structure and Properties of MWNTs/Lyocell Composite Fibers

摘要

In this paper, Multi-walled carbon nanotubes (MWNTs)/Lyocell composite fibers were prepared from the mixture of the modified MWNTs, NMMO solution and the cellulose. The structure and properties of the composite fibers were investigated by WAXD, FESEM and so on. WAXD patterns showed the composite fibers still have cellulose II crystal structure. The results of two dimension x-ray diffraction further showed that the MWNTs in the composite fibers almost aligned along the axis of the fibers and the orientation of MWNTs increased with the increasing draw ratio. Moreover, the FESEM study showed the modified MWNTs were dispersed uniformly in the cellulose matrix. The addition of appropriate amount of modified MWNTs could improve the mechanical properties of composite fiberg. The TGA result revealed that the thermal stability of the composite fiber was also improved by the addition of the MWNTs.