UV irradiation effect on wet-finishing for cotton fabrics with chestnut shell extract

Abstract The use of plant-based agents in textile finishing has garnered substantial global interest, primarily driven by growing environmental concerns. However, applying natural pigments and finishing agents in industrial processes poses notable challenges, particularly with respect to achieving sufficient color intensity and retaining functional properties during washing and light exposure. To address these challenges, this study investigates the potential of ultraviolet (UV) light treatment in textile finishing as a method to enhance functional properties. Cotton fabrics treated with chestnut shell extract—recognized for its bioactive compounds—were subjected to UV irradiation for predetermined periods to induce curing effects. The treated fabrics were then evaluated for color intensity, surface morphology, and functional properties. Results revealed that UV exposure significantly enhanced both color intensity and functional properties, including antibacterial and antioxidant capabilities. Optimal results were achieved after 40 min of UV irradiation, beyond which improvements plateaued. Importantly, this study demonstrates that UV irradiation alone provides sufficient energy to achieve the desired functional enhancements, thereby eliminating the need for additional heat-curing steps and efficient functional wet-process for cotton fabrics with agro-waste ‘chestnut shell’ extract was achieved.