Abstract
Sustainability in textile processing can be induced by the use of green nanotechnology and biomaterials. In this study, silver nanoparticles (AgNPs) have been synthesized by the bio-reduction of silver nitrate using eucalyptus (Eucalyptus globulus) leaves extract. Biosynthesized AgNPs were characterized by using particle size analyzer, ultraviolet (UV) spectroscopy, Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) spectroscopy, and X-ray diffraction (XRD) analysis. AgNPs were employed for natural dyeing of cotton fabric with pomegranate rind (Punica granatum) extract and chitosan as a binder. The effects of AgNPs concentration (100–300 mg L–1), chitosan concentration (0.5–1.5%), and pomegranate rind extract (5–15%) on color strength (K/S) and UV protection (UPF) values were investigated. These variables were optimized using response surface methodology. The quadratic models were developed for further sustainable product development. AgNPs of 279 mg L−1 concentration, 1.3% chitosan, and 14.8% pomegranate dye yielded maximum K/S (8.11) and UPF (223.5) values. This research work can be extended for other bio-reducing agents.
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