| 초록 |
The fabrication of high performance carbon fibers by using melt-processable PAN-based precursors is considered as an environmentally friendly and cost-effective way. In this study, we have investigated the melt processability of a series of terpolymers with different compositions of acrylonitrile (AN), methyl acrylate (MA), and itaconic acid (IA), which were synthesized by an aqueous suspension polymerization. The molecular weight, melt viscosity, and fiber formation of AN/MA/IA-based terpolymers were characterized by using viscometer, rheometer, and melt spinning machine. The molecular weights of the terpolymers with different AN/MA/IA compositions were controlled by adjusting the molar ratios of monomers to initiators. The temperature, time and shear rate for the melt-spinning of the terpolymers were optimized from the rheometrical tests. Based on optimized molecular weight and spinning conditions, melt spinning was carried out to produce PAN-based precursor fibers. |
