Multifunctional antibacterial and ultraviolet protective cotton cellulose developed by in situ biosynthesis of silver nanoparticles into a polysiloxane matrix mediated by sumac leaf extract

A novel facile and eco-friendly procedure for fabrication of multifunctional antibacterial ultraviolet (UV) protective cotton surface was presented, including premodification cellulose fibres with a polysiloxane matrix, followed by green in situ biosynthesis silver nanoparticles (Ag NPs) the presence sumac leaf extract as reducing stabilising agent. During biosynthesis, face-centred cubic Ag NPs an average size 52–105 nm were generated on fibres. Increasing concentration AgNO3 precursor resulted increased 50–11,000 mg/kg. The chemically modified exhibited excellent antimicrobial UV protection properties. additive activity showed biocidal against S. aureus even at lowest NP 50 mg/kg, case E. coli, achieved 340 both provided factor greater than 40, irrespective concentration. increase significantly improved durability coating.