Abstract
The alkaline hydrolysis rate constants k of dyed cotton fiber were measured for a series of vinylsulfonyl reactive dyes and the alkaline hydrolysis rate constants k' of corresponding model dye-fiber compounds were determined. The structure of the reactive dye largely determines the rate of hydrolysis of the dyed fiber. There is a good linear correlation between k and K' for the same reactive groups. The hydrolytic behavior of the dyed cotton fiber can thus be explained by reference to the hydrolysis behavior of the corresponding model dye-fiber compounds, thus enabling studies on the mode of hydrolysis of the vinylsulfonyl reactive dye-fiber bond to be made, using MO theory.
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