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In recent years, the use of color-adsorbing nonwoven as a dye transfer inhibitor to prevent the cross-staining of fabrics in home laundering has received great attention. In this work, a color-adsorbing nonwoven was used to adsorb the dyes desorbed from dyed silk textiles and thereby provide an anti-staining effect in the washing. The nonwoven consisted of cationic regenerated cellulose and polyolefin fibers and had an isoelectric point of 7.82. The adsorption properties of acid dyes on the nonwoven and the anti-staining of the nonwoven were studied. The adsorption kinetics and isotherms of acid dyes on the nonwoven followed the pseudo-second-order kinetic and Langmuir adsorption models, respectively. With increasing temperature, the adsorption saturation increased, and the Langmuir affinity constant decreased, indicating an exothermic effect. The adsorption of dyes with high molecular weight showed great temperature dependence. During the washing of dyed silk textiles, the strong adsorption capability of cationic cellulose for desorbed acid dyes contributed to the anti-staining effect of color-adsorbing nonwoven.

Adsorption Performance of Acid Dyes on Color-Adsorbing Nonwoven and Its Application in the Washing of Silk Textiles