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Table 4 Structural features of the HCNFs and CNFs estimated from XRD and Raman measurement

From: Control of physical properties of carbon nanofibers obtained from coaxial electrospinning of PMMA and PAN with adjustable inner/outer nozzle-ends

Sample C(002) peak position (°) C(002) FWHM (°) I d/I g c/2 (nm) L c (nm)a L a (nm)b
Inward coaxial nozzle 25.46 7.89 0.93 0.350 1.08 4.72
Normal coaxial nozzle 23.64 6.36 0.46 0.376 1.33 9.51
Outward coaxial nozzle 23.72 9.12 0.52 0.375 0.93 8.48
Single nozzle 24.02 7.80 0.48 0.370 1.09 9.23
  1. aFrom XRD C(002) peak and Scherrer’s equation
  2. bFrom Raman spectra and Tuinstra’s equation