air in N,N-dimethyl-formamide pyromellitic dianhydride dissolved in polyacrilonitrile in DMF; dissolved in benzidine; stirred; blend soln. spun into fibre through positively charged capillary; (air) heated up to 280°C for 1 h; (Ar) carbonized up to 1000°C;
参考文献
Solid State Communications, , vol. 142, # 1-2 p. 20 - 23