The Effect of Dyeing on the Sorption of Water Vapour by Wool*

The reduction in the sorptive capacity of wool for water vapour due to acid treatment or dyeing of the wool is discussed and previous results are reviewed. Preliminary experiments carried out with a view to showing a relation between the reduction in the amount of water sorbed and the amount of dye in the wool are reported. The results of these experiments point to an equivalence between the dye in the wool and the reduction in regain of the dyed wool as compared with undyed wool.