In the present work the dying process of linen and cotton fibers with selected reactive and direct dyes has been studied. Quantitative analysis of the dyes exhaustion from a dyebath and their sorption was performed spectrophotometrically. This study was undertaken to address the problems associated with technological and ecological aspects of use of these dyes in the dying process.
Development of the new technologies for manufacturing of artificial fibers from regenerated cellulose made these fibers an interesting object for physicochemical studies. In this work sorption of selected reactive and direct dyes by cellulose carbamate and lyocell fibers were examined. It was established that the dyeability of these fibers is versatile and depends on the type of the fiber, the dyestuff (direct, reactive) and individual properties of a given dye.
Dyeing properties of fibres from modified polyimideamide material were studied. Dyeing isotherms with acid and disperse dyestuff were carried out and the fit of experimental results to sorption equations determined.
Discussion on the influence of different kind of parameters connect with dyeing of acrylic fibres with cationic dyestuffs is given. The property of fibre and the addition of electrolytes on the electrokinetics potential in dyeing bath is briefly discussed. By using three cationic dyestuffs it was investigate the influence of different acidic auxiliary, different amount of common salt and commercial retarder on the rate of sorption. All the investigated additives slower the rate of cationic dyes sorption by acrylic fibres in different period of dyeing to some extent. The knowledge of that influence is useful to avoid problems with unlevel dyeing and more economical used of dyes from dyebath.