Abstract
Dyeability of poly(p-phenylene terephthalamide) (PPTA) filament fibers was examined. A new type of PPTA fiber has been developed to improve the dyeability of regular PPTA fiber, which could not be dyed using the conventional ways. The water content of the new fiber could be 30% or more until being dyed. The large amount of water in the new fiber is to be enabled to dye the fiber by the conventional methods. In fact, the new fiber could be dyed with cationic dyes or disperse ones following the established ways. In the case of cationic dyeing, the obtained colors extended from pastel to deep color under the corresponding dyeing conditions.
