抄録
In this paper, the effects of sodium lauryl sulfate on the mixture dyeing of nylon with monobasic dyes (C. I. Acid Orange 7, C. I. Acid Blue 43 and C. I. Acid Yellow 36) are considered.
To examine the dyeing properties of three acid dyes used in this experiment for nylon, the affinities of dye acid for nylon in mixture dyeing are obtained. The affinities of Acid Orange 7, Acid Blue 43 and Acid Yellow 36 for nylon at 95°C are 14.9, 13.8 and 15.8 Kcal/mol respectively.
The effects of sodium lauryl sulfate on the adsorption of each dye ion in mixture dyeing of Acid Orange and Acid Blue, and in mixture dyeing of Acid Yellow on Acid Blue are examined. The adsorption of each dye on nylon in mixture dyeing in presence of sodium lauryl sulfate is found to decrease as sodium laurryl sulfate in dye solution increases. This is considered to be due to the competition for dye sites on nylon betwwn lauryl sulfate ion and dye anions.
