DYEING BEHAVIOR OF NYLON 6 FIBER TREATED WITH BUTANOL/WATER

Abstract

Nylon 6 fiber was pretreated with butanol/water solutions of various compositions. The dyeing behaviors of the fibers with 1, 4-diaminoanthraquinone in water and perchloroethylene were investigated with reference to changes in fine structure of the fibers.
In the case of dyeing in water, the significant difference in the amount of dye absorbed between the untreated fiber and the fiber pretreated with aqueous 5% butanol solution was not observed. On the other hand, in the case of dyeing in perchloroethylene the dye uptake increased in the following order: untreated fiber<fiber pretreated with butanol<fiber pretreated with water<fiber pretreated with aqueous 2% butanol solution<fiber pretreated with aqueous 95% butanol solution<fiber pretreated with aqueous 5% butanol solution. Also in the both cases of dyeing in water and perchloroethylene the rate of dye absorbed and desorbed increased in the same order as that shown above. In addition, the relations between dyeing temperatures and dye uptakes were investigated.
The results obtained are briefly discussed in terms of the changes in the fiber structure formed during the pretreatment with butanol/water solutions.