Cotton hanks were dyed with three different sulphur dyes using non-sulphide reducing agents such as glucose, fructose, invert sugar and molasses. The alkalies employed for reduction were sodium carbonate and sodium hydroxide. Invert sugar as a reducing agent and sodium carbonate as alkali proved to be better as this combination gave results comparable to those obtained with the conventional sod...

Blue dye (indigo) from Indigofera tinctoria leaves is a popular natural used worldwide. The lower light fastness of indigo dyes compared to that synthetic blue one the drawbacks former, limiting its utiliz

Abstract For conjugating sulfa drug moieties with Schiff’s bases scaffold in the same build through an azo linker to take advantage of bioactive feature both motifs, we designed and synthesized a series disperse dyes. The target dyes, methyl 2-( E -2-hydroxy-5-(( )-(4-sulfa-derivative) diazenyl)benzylidene) hydrazine-1-carbodithioates 4a – e have been via acidic reaction dyes 3a hydrazine carbo...

Abstract Natural dyes are gaining a great deal of attention due to their eco-friendly and sustainable properties for advanced apparel applications. However, the reproducibility accessibility various colors using natural remain challenging. In this study, plant-extracted fluorescent protein C-phycocyanin (CP) is used as dye source doped in polyvinyl alcohol (PVA) nanofibers via electrospinning T...

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...

New dyestuff moieties are introduced in the textile industry to upgrade quality and aesthetic properties of dyed fabric. To contribute this research endeavor, current project was conducted for dyeing cellulosic fabric via new hetero-functional reactive dyes R1 R2 synthesized our previous study. Optimization different process variables (temperature, salt, alkali concentration) their interactive ...

In recent years, chitosan and its different derivatives have been extensively used in surface modification and functional finishing of textiles. In this study, wool yarns used in handmade carpet were treated with different concentrations of chitosan-poly (amidoamine) dendrimer hybrid (Ch-PAMAM) and characterized by scanning electron microscope (SEM), and their dyeing properties were investi...