Then, for two hours, the fibers were stabilized at 280°C at a rate of 8°C/min. The pure lignin precursor fibers took 24 hours to stabilize entirely, whereas the addition of cellulose reduced the stabilization time to 2 hours. Furthermore, the stabilization temperature ought to be lower than the precursor's thermal degradation temperature. Additionally, It was observed that the lignin-cellulose blend's thermal decomposition temperature dropped with the addition of lignin. The stabilized fibers underwent carbonization at 600°C at 10°C/min. The resultant carbon fibers have relatively low tensile strength and modulus; increasing the tensile strength may be the next topic of investigation in lignin-cellulose-based carbon fibers.