In-situ hydrothermally immobilization of nano palladium for cutting-edge of multi-finishing viscose textile with enhancing the durability

The in-situ embedding of nano-palladium (PdNPs) within the viscose textile was hydrothermally carried out in different media (acid & alkaline) in order to gain multi-finishing properties. Cationization of viscose (Q-viscose) was performed using diallyl dimethyl ammonium chloride, to improve the fabric’s functionality. The size of PdNPs in the supernatants was quite small (6.9 & 10.3 nm), while aggregated particles of Pd was seen over the fabrics. Alkaline condition was shown to enhance the accessibility of viscose textile and consequently denser Pd masses were detected. Due to the in-situ embedding of PdNPs, color of viscose turned to yellow-brownish, while deeper color obtained for Q-viscose. UV protection factor (UPF) declare that; Q-viscose had very good to excellent UV-blocking (UPF = 38.9 – 49.7). UV-blocking was stand until 10 washing cycles and good to very good blocking (UPF = 20.3 – 33.6) was recorded. The modified Q-viscose exhibited very good microbial protection (against bacteria & fungi) and 85.4–87.8% from the microbes was dead. Partial durability for microbial reduction was obtained, while the microbial mortality reached 58.9–61.2% after 10 repetitive washings. Hence, long-lasting UV-blocking viscose textiles with antimicrobial character were successfully prepared via in-situ embedded of PdNPs.