PBO	Poly(p-phenylene benzobisoxazole)
HTT	Heat treatment temperature
TGA	Thermalgravimetric analysis
TGA-MS	Thermalgravimetric analysis coupled with mass spectroscopy
PAN	Polyacrylonitrile
PAN-CF	Polyacrylonitrile-based carbon fiber
OEA	Organic elemental analysis
SEM	Scanning electron microscopy
XRD	X-ray diffraction
FWHM	Full width at half maximum