Abstract:

In this paper, the polyacrylonitrile-based carbon nanofibers were successfully prepared by centrifugal spinning process. And the effect of spinning process parameters such as concentration, rotational speed, spinneret diameter and receiving distance was explored to obtain the optimum combination of parameters. Except, the temperature and time of pre-oxidation treatment was optimized during the carbonization process. The results showed that the concentration of solution has the most significant influence on the fiber diameter and the rotational speed has the most significant influence on the uniformity of the fibers in this centrifugal spinning process. In addition, the treatment temperature of pre-oxidation should be kept above 250℃ and the optimum treatment time is 2h.

Key words: centrijugal spinning, parameter, polyacrylonitrile fiber, pre-oxidation, carbon nanofibers