Natural Dyeing of Cellulose and Protein Fibers with the Flower Extract of Spartium junceum L. Plant

Abstract

In this study, the natural dye was extracted from Spartium junceum L. (SJL) flowers and applied on cellulose (cotton) and protein (wool) fabric. Fabrics were pre-mordant with alum prior to the dyeing process. Considering the global requirements on zero waste and green policy, the dyeing process was intended to be as much as possible environmentally friendly but still effective. Therefore, mordant concentration was optimized due to the reduction of the negative impact. The efficiency of the dyeing process was investigated by examination of fabrics’ color characteristics and colorfastness to washing properties. In this paper, we have proved that the extracted dye from Spartium junceum L. is an acidic dye (mordant dye) which is more applicable for the treatment of wool fabrics. In this paper, it was proved that phytochemicals responsible for coloring are part of the flavonoids group. The UV absorption spectra of extracted dye show 4 bands in the region of λmax 224, 268, 308 and 346 nm which are ascribed to bands characteristic for flavonoids. Wool fabric pre-mordant with 3% alum and dyed shows great chromatic (C*) properties where C* value is in a range from 47.76 for unwashed samples to 47.50 for samples after 5 washing cycles and color hue (h°) is in a range 82.13 for unwashed samples to 81.52 for samples after 5 washing cycles. The best result regarding the colorfastness properties is shown by the wool sample treated with 3% alum after 5 washing cycles (total difference in color (Delta E*) = 0.87). These results confirm that metal (Al) from alum mordant make strong chemical bonds with wool substrate and dye since Delta E* values decrease in comparison to Delta E* values of the cotton samples treated the same way. The results revealed it is possible to reduce the concentration of mordant up to 3% and obtain satisfactory results regarding the colorfastness. Nevertheless, future research will go in the direction of replacing synthetic mordant with a more environmentally friendly one.

Exploring the Flora of South Sulawesi, Forest Vegetation, and Karst Areas as Bundle Dyeing on Silk Fabrics

“…e printed color variations are highly dependent on the color pigments contained in the dyes used. e phytochemicals responsible for the dyeing are from the flavonoid group [20,28,29]. Organic dyes are divided into chemical classes: anthraquinone-to none, indigoid, naphthoquinone, carotenoids, flavones, dihydropyran, anthocyanidin, and flavonol [16].…”

Sustainable exploration of coffee extracts (coffea arabica l.) for dyeing of microwave-treated bio-mordanted cotton fabric

“…Of these products, the coloring process of matrix, such as fabric, wool, glass, has gained a lot of fame. Previously, this process was done by natural sources, but with industrial advancement, synthetic colorants have been used (Kovac ˇevi c et al, 2021;Viera et al, 2019). Till now, thousands of dyes have been formulated and used and are used in almost all walks of The current issue and full text archive of this journal is available on Emerald Insight at: https://www.emerald.com/insight/0369-9420.htm life (N athia-Neves et al, 2019;Mahdi et al, 2020).…”

Optimization of cotton fabrics dyeing process using various natural dye extracts

“…The quality parameter of the natural dyeing process on textile materials is the stability of the complex formed between the dye and the fiber. The stability of the dye-fiber complex is influenced by the structure of the fiber, the dyeing time and temperature, and the characteristics of the dye molecules (Kovačević et al 2021). Furthermore, the method applied to extract dyes from the plants also affects the quality of the resulting color.…”