Application of natural yellow (curcumin) dye on silk to impart multifunctional finishing and validation of dyeing process using BBD model

Abstract

Dyeing of silk fabric was carried with curcumin, extracted from turmeric, which is known for its yellow colour and antioxidant properties. Design expert Box‐Behnken design (BBD) model was employed to perform dyeing experiments on silk fabric with curcumin dye. The dyed fabrics were characterized for its functional properties by colour measurement as K/S values, antioxidant activity by DPPH assay and UPF. The curcumin dyed silk samples showed upto 88% antioxidant activity and good to excellent ultraviolet protection depending on the percentage of curcumin used. The effect of pre‐mordanting using metal mordants was also studied.

Enhancement of natural dyeing properties and UV resistance of silk fibers modified by phenylboronic acid/hydroxypropyl‐β‐cyclodextrin functionalized Fe3O4 particle

“…After dyeing, the anti‐UV property of modified silk fabrics is further enhanced by GSPE owing to presence of a number of aromatic rings in the GSPE structure 11 . It is worth noting that the UPF value obtained by us is slightly lower than the UPF value in the literature, which may be related to the low area density and thickness of the silk and the dye concentration used 81,82 …”

“…The tested sample were dyed when the dyeing time and temperature were fixed at 60 min and 60°C without addition of pH regulator. It was investigated that the untreated silk fabrics have poor light fastness and the rubbing fastness of wet and dry reach 4 grades (wet) and 5 grade (Dry) 7,81 . After 20 times washing circles, the fading fastness and staining fastness of untreated silk fabric reaches 4 grade and 3–4 grades.…”

“…It was investigated that the untreated silk fabrics have poor light fastness and the rubbing fastness of wet and dry reach 4 grades (wet) and 5 grade (Dry). 7,81 After 20 times washing circles, the fading fastness and staining fastness of untreated silk fabric reaches 4 grade and 3-4 grades. For the modified silk fabric, most of the experiments resulted in color change values of 4-5 or 5 grades.…”

Graphene Oxide Embedded Copper Composite as an Efficient Mordant to Enhance the Properties of Natural Dye Coated Cotton Fabric.

“…(Goswami et al, 2003) The curve for 2-methyl-8hyrdoxy quinoline shown in Figure 2a iii a characteristic peak at 1580 cm-1 corresponding to the C=N, the peak at 3250 cm -1 denoting the O-H vibrations and peaks in the range of 1416 cm -1 denoting the C-O vibrations. (Mittal et al, 2020)The curve for the CHG composite shown in Figure 2a iv denotes the characteristic peak at around 1683 cm -1 for the C=O vibrations, (Palaskar et al, 2021) peak in the range of 1575 cm -1 representing the C=C and C=N linkage. The peak at around 3300 cm -1 denotes the O-H vibrations.…”

Functionalization of silk with chitosan and Rubia cordifolia L. dye extract for enhanced antimicrobial and ultraviolet protective properties

“…28,29 Furthermore, metallic mordants were reported to be useful for the antibacterial 30,31 and UV protective performance of treated silk. 32,33 However, the use of significant amounts of metallic mordants does not meet ecological criteria because they are discharged in wastewater and may endanger human health and ecosystems. 34 As an alternative, bio-mordants have been introduced into dyeing methods not only to make the process more environmentally friendly, but also to exploit their biological functions on applied textiles.…”