The effect of cationic modification of cotton fabrics, using commercial agent Sintegal V7conc, on reactive dyeing characteristics was studied in this work. The changes after cationization and their effects on practical application of reactive dyes were identified by various methods. Cationically modified fabrics have more positive zeta potential, compared to untreated fabrics, which has a favorable influence on reactive dyeing in the absence or presence of salt. Color intensities of reactive dyes reached their maximum on samples treated with the highest concentration of Sintegal V7conc solution and dyed in the presence of standard salt concentration. The results obtained indicate that color intensity increase is a combined contribution of both salt and cationic agent on adsorption and fixation of reactive dyes on cotton.

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Uklanjanje hidrolizovane reaktivne boje važna je faza rada u bojenju pamuka jer utiče na eksploataciona i higijenska svojstva tekstilnih proizvoda. Kao veliki potrošač vode i hemikalija ovaj radni proces proučava se sa aspekta uštede prirodnih resursa i zaštite životne sredine. U ovom radu pruočavan je učinak sredstava za pranje na bazi tenzida različitog jonogeniteta kao i čiste vode na uklanjanje hidrolizovanih reaktivnih boja različitih funkcionalnih grupa. Dobijeni rezultati upućuju na zaključak da čista voda pri većem odnosu kupatila (1:30) i vremenu pranja 30 min može biti efi kasno sredstvo za uklanjanje hidrolizovane monoreaktivne boje. Kod uklanjanja hidrolizovane bifunkcionalne boje pored odnosa kupatila i vremena pranja i koncentracija tenzida može da ima značajan uticaj na učinak procesa.

The tendency of textile materials to crease is reduced by the finishing process when cross-linked compounds are incorporated in the amorphous phase, which improve the recovery of material after the elimination of the pressure load. Because of adverse effects on human health conventional formaldehyde-based processing compounds are increasingly substituted by new compounds and by use of biopolymers. In the paper, examined is the possibility of using the biopolymer chitosan in combination with reactive resin to improve the physical properties of fabrics made of blended cotton/PES. The use of chitosan in combination with commercial reactant improves the physical characteristics of fabrics, because increasing the concentrations of biopolymer progressively increases recovery angle (a0), quality number (K) and the bursting strength of the treated fabric.

Cotton dyeing is usually performed by reactive dyes by exhaustion method. Great quantities of salts and alkalis used in the formulation of dyeing bath eventually get into the watercourses and negatively affect the environment. In this work, studied are the possibilities of reducing salt and alkali concentrations in the dyeing bath in order to reduce water pollution after the dyeing process and soap washing. The obtained results show that the alternative procedures are environmentally more favorable, which is demonstrated by reduced values chemical oxygen demand. High level of dye fixation and fastness was achieved, while the colour intensity was slightly lower in comparison with standard samples.