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Abstract

The dyeing rate and equilibrium dye uptake by Cu(II)-wool complex fibers pre treated with hydrogen peroxide were examined to elucidate the treatment's structural effect on individual histological components of intact wool fibers. A comparison of the relationships between relative dye uptake (C_t/C_∞ ) and the square root of the dyeing time ( t ^1/2) for different weight losses in the fibers revealed considerable differ ences in the initial dyeing behavior between the Cu(II)-wool complex fibers pretreated with hydrogen peroxide. There were differences in the slope of the line and the negative intercept of the extrapolated straight line at t = 0. Apparently, the surface barrier effect in dyeing was diminished by the hydrogen peroxide treatment. This treatment is be lieved to affect individual histological components of wool fibers and to promote acid dye penetration into them.

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Dyeing Behavior of Cu(II)-Wool Complex Fibers Pretreated with Hydrogen Peroxide

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