We examined the exhaustion and penetration of four wool dyes with different struc tures and different dyeing characteristics on untreated and Basolan DC treated wool fibers. The results indicate that chlorination contributes considerably to an increase in the rate of dye exhaustion as well as dye penetration rates. A comparison of these parameters shows that in the case of chlorinated wool, surface adsorption processes precede dye penetration, indicating a change in the surface characteristics of the wool. We measured the extent of wool damage using the alkaline solubility method, and found that chlorinated wool could compensate for differences in dyeing behavior of different wool dyes.
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