Natural dyes are gaining interest due their expected low risk to human health and to the environment. In this study, the wash fastness of a natural coloring matter from the liquid waste produced in the steam treatment of eucalyptus wood in textile fabrics was investigated. Specifically, eucalyptus wood extract was used to dye cotton, nylon and wool in an exhaust dyeing process without the addit...

A novel chitosan-based biopolymer dye possessing antibacterial properties was synthesized by reaction of O-carboxymethyl chitosan and Acid Red GR. The synthesized materials were characterized by Fourier transform infrared spectroscopy (FTIR), degree of substitution (DS), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TG), X-ray diffraction (XRD), water solubility test, anti...

Three sulfatoethylsulfone reactive dyes have been synthesized and were applied to mill desized, bleached and mercerized cotton fabric. Effect of different dyeing parameters i.e. salt concentration, dyeing time, dyeing temperature and pH of dye solution were being optimized by exhaust dyeing method. The fixation (%F) of the synthesized dye molecules with the cotton fabrics was also studied. Cott...

In the present work an evaluation was carried out on the effect dye-bath pH and mordant type on the obtained shades and fastness properties in wool dyeing with cochineal. In this way wool samples were first mordanted with four different mordants and subsequently dyed with cochineal at different levels of dye-bath pH. Colorimetric evaluations were carried out and fastness properties of the dyed ...

in this study, a functional colorant, berberine, extracted from berberis vulgaris wood was applied onto wool fiber using the extract of roots of rumex hymenosepolus as biomordant. the effect of treatment variables on the color strength of dyed fibers was examined. the fastness properties of dyed wool against washing, light, dry and wet rubbing were evaluated. dyed samples were tested for antiba...

India has a very rich diversity and plantkingdom is certainly a treasure house of diverse natural products. One such product from nature is the dye. In this study, natural colorants mainly flavonoids and carotenoids present in the Marigold flower (TageteserectaL.) were extracted using Soxhlet extraction method and other conventional techniques under different operating conditions. Spectrophotom...

The dry rind of the pomegranate (Punica granatum) has been used as dye stuff since earlier times. In the present study the dye extracts were obtained from the rinds of the P. granatum and used for dyeing the cotton fabrics. The fabrics were assessed for antimicrobial, dyeability and fastness properties. The color strength (K/S) of dyed fabric was assessed through dyeability test. The antibacter...

The purpose of this study was to investigate the effect of the structure of reactive dye on cotton ink-jet printing. Cotton fabric was printed upon with three commercial cellulosic reactive dyes which are based on the similar chromophore and possess different numbers of reactive and anionic groups. Colour yield and absorbed dye fixation of the printed cotton were evaluated at various pHs. The i...

The current commercial application of ink-jet reactive inks to cotton fabrics has been through pre-treating with pad liquor prior to printing. In This study made an effort to provide a single phase ink-jet printing process for printing cotton fabric using the novel cationic reactive dye in ink’s formulation. Cotton fabric was printed upon with the novel cationic reactive dye and commercial anio...

This paper introduced the study on preparation and properties of resin dye-fixatives on cotton fabrics in detail, and analysize the relations between their different structures, molecular weight and their fastness properties, from which some disciplines were obtained. Lastly, some suggestions on resolving the shortcomings of resin dye-fixatives on cotton fabrics were given according to the litu...