Intensification of dying of silk and cotton-silk fabrics with water-soluble dyes in the presence of chitosan

Abstract

The results of the study of the effects of textile excipients are striking for the intensification of the processes of dyeing silk and mixed fabrics with active dyes. For the first time, a technique has been developed for using chitosan isolated from dead bees Apis Mellifera as an intensifier. It was found that treatment with chitosan leads to an increase in their sorption capacity and the appearance of centers of charge in silk and cellulose fibers. A certain nature of the bond and the chemical mechanism of action in the fiber-chitosan-dye system, as well as the effect of intensifiers on the degree and amount of fixation of active dyes on the fiber. The article uses modern physical and chemical research methods: IR and UV spectroscopy, scanning electron microscopy (SEM), standard methods for determining the physical and mechanical properties, as well as color indicators of the quality of dyed fabrics. The practical significance of the results of the study is explained by the fact that the dyeing of silk and cotton-silk fabrics in the presence of chitosan improves the color characteristics of the fabric, reduces the use of imported dyes and reduces the consumption of chemical reagents.