Abstract
The effect of the presence of dyes in nylon 6 fibers has been studied. It is seen that the presence of acid, disperse, and reactive dyes brings about perceptible changes in the stress-strain characteristics of the dyed fibers. From the results it was concluded that the physical hindrance by the dye molecules is independent of the forces binding the dye to its site in the fiber phase. The dye participates in the structural rearrangements of the fiber during dyeing with disperse and disperse reactive dyes, and this is detected by the increase in critical dissolution time of the dyed fibers. However, such a phe nomenon is not observed in the case of fibers dyed with acid dyes.
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