Sustainable wool fibers dyeing using henna extract in non-aqueous medium

Various Uses of Natural Plants Extracts for Functionalization Textile Based Materials

“…All fibres treated are very good to wash fastness compared with untreated fibres. The change in color and staining of nearby textiles (wool and cotton) is good (3)(4) to very good (4-5), respectively, while the staining rate of untreated samples was good (3)(4) to fair (3) on wool and good to very good. Dry and wet rubbing fastness was found to be excellent with treated samples (4-5), but untreated samples were only fair to good.…”

“…Textiles are treated with chitosan as a multifunctional finish because chemical qualities contribute not only to the antibacterial characteristics but also increase the qualities of dyeing and fastness. [4] Chitosan pretreatment 1% of chitosan polymer in acidic acetic acid solution has been produced by stirring, Wool fibres were soaked and kept at room temperature in the prepared solution. The samples have been finally padded and cured and then dyed.…”

“…To spread the tiny particles of decamethylcyclopentasiloxane, two droplets of oleic acid have been added, then Wool fibre was taken from the tin bath and properly washed in tap water and then soaped. [4] Dyeing and fastness properties Due to improvement in the coloring absorption and fixation in decamethylcyclopentasiloxane medium, the color strength (K/S) of the sample treated with decamethylcyclopentasiloxane is greater than the water bath treated with the same dye concentration. As the henna extract amount reduced, the color strength of treated and untreated samples reduced and these results are expected as color strength rises as the concentration of color increases.…”

Eco-friendly isolation of tannin based natural colorant from coconut coir (Cocos nucifera) for dyeing of bio-mordanted wool fabric

“…At low temperatures, the dye molecules do not move towards the fabric surface whereas high heating may have caused degradation of dye molecules which were not sorbed on the fabric properly thereby resulting into low color strength (Samanta, 2020). Hence, it can be seen that irradiation treatment has leveled heating point (65 o C) of the dyeing of woolen fabric using methanolic coconut coir extract which show it is an energy effective tool (Alebeid et al, 2020)…”

“…This is because Al, Fe & tannic acid (TA) form metal dye complex which form stable shades with good color strength (Raniet al, 2020). All biomordants have -OH group which via making extra H-bonding with colorant & fabric given excellent results(Adeel et al, 2020c;Alebeid et al, 2020). But overall biomordants have shown excellent potential to make process green and sustainable & viable in natural dyeing process.…”