Production parameters for carbon nanofibers

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Polyacrylonitrile (PAN) is the most often used material for carbon fiber production. Carbon nanofibers, however, created from electrospun PAN nanofibers, necessitate different production parameters during stabilization and carbonization steps. Investigation of these parameters can be performed by various optical, chemical and other examinations, e.g. of the sample color (with increasing stabilization, samples get darker and darker), using FTIR, DSC, TGA, and other techniques. A few groups have performed such experiments during the last years, giving rise to a set of parameters which work for the PAN types under investigation, while these parameters may change significantly for other raw material.

Stabilized and carbonized nanofibers can be used in a broad variety of possible applications, especially for integration in thermoplastic composites to improve their mechanical properties.

K. Molnár, B. Szolnoki, A. Toldy, L. M. Vas
Thermochemical stabilization and analysis of continuously electrospun nanofibers
J. Therm. Anal. Calorim. 117, 1123-1135 (2014)

S. Rafiei, B. Noroozi, Sh. Arbab, A. K. Haghi
Characteristic Assessment of Stabilized Polyacrylonitrile Nanowebs for the Production of Activated Carbon Nano-Sorbents
Chinese Journal of Polymer Science 32, 449-457 (2014)

H. Gu, Y. Li, N. Li
Electrical Conductive and Structural Characterization of Electrospun Aligned Carbon Nanofibers Membrane
Fibers and Polymers 16, 2601-2608 (2015)