This study aims to extend color shade range of Rubia tinctorum L. (Dyer’s madder) natural dye on wool textiles via binary combination Al, Sn, Cr, Fe, Cu, Ni, Co, Zn mordants. Wool yarns were premordanted, dyed with 75.0%owf madder dye, and characterized for their strength, colorimetric parameters, fastness. Nature single metal cations substantially affected shades, fastness properties due diffe...

An ecological approach has been obtained by using natural dyes and mordant for dyeing process. Fabrics dyed using myrobalan extract as natural mordants and green dye. A red color were obtained by using theses mordants. The color of dyed fabrics was investigated in CIELab L, a and b and K/S values. Finally, all dyed fabrics were tested for wash and light fastness properties as per ISO standard t...

A yellow, alkali-clearable azo disperse dye containing a carboxylic ester moiety was readily synthesized from the reactant p-aminobenzoic acid by successive diazotization, coupling reaction, chlorination and esterification with ethanol. Then its molecular structure was characterized by FTIR, H NMR, C NMR, mass spectrometry and elemental analysis. The synthesized dye and a similar control dye co...

The dye used on the silk textiles in an as yet undated relic shrine in a church in Antwerp was analysed by reflectance UV-Vis spectrometry. The natural dyestuff carthamin from safflower (Carthamus tinctorius) was detected; because of its very poor light fastness this does not allow the shrine to be exhibited. Neither does it allow dating of the silk, since safflower has been used over a period ...

This work aims to conduct an eco-friendly textile finishing process by applying agricultural by-products as a dye for the of polyamide fabrics. A natural was obtained from pomegranate peel extract. Polyamide fabrics were dyed at different conditions, and four mordanting agents tested. The finished analyzed in terms CIE L, a, b color yield (K/S) values, well washing fastness, rubbing light fastn...

The dyeing of wool fibers using saffron petals as a natural dye has been studied for first time in this paper. Saffron petal is one of the by-products of fields which are thrown away after harvesting while they can possibly be used. A series of dyeing formulation prepared with saffron petals and different mordants and the mordant effect on hue, light and wash fastness of dyed fibers were invest...

1.1 Dyeing auxiliaries Auxiliaries are compounds which are not an integral part of the dyeing process but by adding them to the dye bath the dyeing can be improved. The main functions of auxiliaries are to prepare or improve the substrate in readiness for colorants (by wetting, providing sorption sites, improving or resisting the migration of dyes), to stabilize the application media (by improv...