Durable multifunction finishing on polyester knitted fabric by applying zinc oxide nanoparticles

Purpose The durability of nanoparticles (NPs) is essential to retain their multifunctional properties on the surface of textile products. This study aims to propose a durable and compatible zinc oxide nanoparticles (ZnO-NPs) formulation with good antibacterial, ultraviolet (UV) resistance and moisture management properties. Design/methodology/approach One-step synthesis of zinc oxide nanoparticles (ZnO NPs) was done through wet chemical technique and characterized through Fourier transform infrared spectroscopy (FTIR), X-ray diffraction and scanning electron microscope (SEM) techniques. Various formulations containing nanoparticles of ZnO along with optimized concentrations of binder, emulsifier nanoparticles and softener are developed and applied to polyester knitted fabric through the pad-dry-cure method. The treated polyester fabric is evaluated for its antibacterial and UV protection activity, moisture management properties, air permeability and durability. Findings Results show that the zinc oxide nanoparticles have a hexagonal wurtzite structure with a 60–70 nm particle size. FTIR and SEM analysis of nano-loaded polyester knitted fabric before washing and after 20 washes confirm the presence of zinc oxide nanoparticles which shows the durability of the optimized formulation. The treated samples have shown promising antibacterial and moisture management properties and are durable up to 20 washing cycles. Originality/value The incorporation of metal oxides into textile materials to enhance their antimicrobial properties has been the subject of considerable research, particularly about cotton and other natural fibers. These natural fibers possess polar sites that promote the effective attachment of metal oxide particles. In contrast, there has been limited investigation into the application of these metal oxides on polyester, a non-polar fiber. Although significant attention has been given to the size and shape of nanoparticles, there remains a notable lack of studies focusing on the impact of binder types and their concentrations on the durability of coated fabrics. This research aims to address the existing gap in knowledge by examining the effects of various binder types and concentrations, in conjunction with differing concentrations of zinc oxide (ZnO) nanoparticles, on the functional properties and durability of nanoparticle-coated fabrics. The ultimate objective is to enhance the comfort and overall performance of these fabrics for the wearer.