A novel approach for adding smart functionalities to cellulosic fabrics

► Preparation and characterization of AgNPs/HBPAA nanocomposite. ► Functional finishing and reactive dyeing using the prepared nanocomposite. ► Imparting a remarkable antibacterial activity. ► Enhancing dyeing and hydrophilicity properties. ► Causing less damage to other performance properties. A water soluble nanocomposite, based on Ag-nanoparticles (Ag-NPs) loaded on hyperbranched poly (amide–amine, HBPAA) was prepared, characterized and utilized in functional finishing as well as in combined reactive dyeing/and functional finishing of linen, cotton and viscose fabrics. Incorporation of the nanocomposite alone and in combination with reactive dyes in easy care finishing formulations brought about an outstanding antibacterial functionality of the finished and the dyed/finished fabrics even after 15 laundering cycles along with a slight negative impact on other performance properties. Improvement or decrement in the functional, comfort, and dyeing properties is governed by the type of cellulosic substrate.