What could be the reason for the formation of beads in PAN electrospun nanofiber after Carbonization at 900 C under nitrogen atmosphere?

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Hayder Ibrahim Mohammed

Hello Sumit,

this paper may help you:

Fabrication of conductive Lignin/PAN carbon nanofibers with enhanced graphene for the modified electrodes

Milad Razbin

Hi Sumit Dubal

Can you provide the SEM/FTIR or Raman of your PAN nanofiber before and after the canonization processes to discuss about?

Sami Ullah Khan

Reduce the temperature and remeasure

Sumit Dubal

Milad Razbin pfa.

Milad Razbin pfa. after carbonization

One of the phenomena that occurs during electrospinning involves non-uniform internal porosity along the fibers due to the evaporation of the solvent from the inside out. On the other hand, during the processing of fibers with such a structure under the carbonization method, the phenomenon of shrinkage due to heat is possible. Therefore, it can be concluded that in regions with high porosity, more shrinkage occurs and the diameter decreases. In order to confirm this statement, you can check the cross-section of fibers in different regions.

Goodluck

Milad Razbin Thank you sir for your answer.