Sustainable dyeing and functionalization of wool fabrics with black rice extract

“…8 These dyes are widely used in anti-oxidant, anti-fungal, anti-bacterial finishing, U.V protection and other industries since they are non-toxic, environmentally friendly and easy to degrade. 9,10 These dyes are organic macromolecules with a broad ability to bind (intermolecular force or hydrogen bond) with natural fibres. Natural dyes have risen in popularity as potential alternatives to synthetic dyes due to their biodegradability, low toxicity and low occurrence of allergic reactions.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic-assisted sustainable pollution free advanced method for isolation of colouring material from Amba Haldi (Curcuma aromatica) for wool dyeing

et al. 2023

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The purpose of this research is to evaluate the colouring performance of Amba Haldi–based natural extracted yellowish colour for the dyeing of wool fabric using ultrasonic (US) treatments. Before and after the US treatment, the colourant was separated in aqueous and acidic solutions for up to 60 min. Scanning electron microscopy and Fourier-transform infrared spectroscopy were used to investigate the surface morphology and chemical changes in the cloth before and after radiation. On the wool fabric that was ultrasonically treated at 75°C for 45 min, an acidic extract of Amba Haldi powder after US treatment for 20 min showed good colour depth (K/S). Acacia extract (2%), pomegranate extract (1.5%) and pistachio extract (1%), when used as pre-biomordants, were shown to have excellent colour strength. Acacia (1.5%) extract, pomegranate (2%) extract and pistachio (1.5%) extract were also used as post-biomordants. As pre-chemical mordants, Al salts (1%), Fe salts (1.5%) and tannic acid salts (2%), whereas Al salts (2%), Fe salts (1%) and tannic acid salts (2%), have produced successful results as post-chemical mordants. Overall, it was discovered that pomegranate extract (2%), used as a post-bio-mordant, and salt of Fe (1.5%), used as a post-chemical mordant, both exhibit exceptional colour strength. Ultrasonic treatment, a procedure that is harmless for the environment, has only served to increase the colour strength of dye on wool fabric, and the addition of bio-mordants has made the process more sustainable.

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“…For example, (1) Pandey et al 41 synthesized AgNPs nanocatalyst using high‐molecular‐weight κ‐carrageenan, which were stable over two‐month period without the use of any capping or protective chemicals; (2) In another study shown the stabilized‐silver/mesoporous silica using sodium alginate as a reducing and stabilizing agent 42 . The primary benefits of using plant extracts as a template in the synthesis of metal nanoparticles are environmentally friendly, energy‐efficient, non‐toxic, cost‐effective, and safe reagents 43,44 . They have various metabolites that can aid in the reduction of metal ions and are better at synthesizing than fungi and microbes.…”

Section: Introductionmentioning

confidence: 99%

“…42 The primary benefits of using plant extracts as a template in the synthesis of metal nanoparticles are environmentally friendly, energy-efficient, non-toxic, cost-effective, and safe reagents. 43,44 They have various metabolites that can aid in the reduction of metal ions and are better at synthesizing than fungi and microbes. The plant phytochemicals, including terpenoves, ketones, flavones, amides, aldehydes, and carboxylic acids directly participate in the reduction of metal ion and the formation of metal nanoparticles.…”

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confidence: 99%

Fabrication and stabilization of green nanosilver using gardenia yellow natural dyes for efficient degradation of bacteria

Jiang

Guo

Zhang

et al. 2022

Env Prog and Sustain Energy

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The various applications of silver nanoparticles (AgNPs) are brutally hampered in the practical field due to their instability and aggregation features. Thus, highly stable colloidal AgNPs were produced in obedience to the principle of 'green chemistry' that uses natural dyes extracted from gardenia fruits as stabilizing and simultaneously as reducing agents. The effect of operating conditions on the synthesis of AgNPs was studied using a one-variable-at-a-time technique to maximize the growth of particles.The analysis of AgNPs produced at optimum reaction parameters discovered that the particles are face-centered cubic metallic silver, mostly in spherical shapes, nanoranged in diameter (23.4 ± 6.4 nm) with a confined size distribution, enormously crystalline surface (d-spacing = 0.233 nm), firmly stabilized (zeta potential = À29.0 mV) by a thin membrane of gardenia phytochemicals. They exhibited significant bacterial reduction inhibition against the growth of Escherichia coli and Staphylococcus aureus owing to the strong antibacterial function of nanosilver.

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Sustainable dyeing and functionalization of wool fabrics with black rice extract

Cited by 37 publications

References 33 publications

Investigation of the performance of okra fiber in woven fabric

Investigation of the performance of okra fiber in woven fabric

Ultrasonic-assisted sustainable pollution free advanced method for isolation of colouring material from Amba Haldi (Curcuma aromatica) for wool dyeing

Fabrication and stabilization of green nanosilver using gardenia yellow natural dyes for efficient degradation of bacteria

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