Ultra-efficient and fire-safety glucose-based cellulose fabrics with high antibacterial and well wearing performance

Developing ultra-efficient fire-safety lyocell fabrics with high performances from biomass was the immense interest due to the sustainable and protective concerns. Herein, novel fully biomass coating of lyocell fabrics (Lyocell/PA-ZnG) was prepared using phytic acid (PA) and zinc gluconate (ZnG) via ion exchange reaction with water solvent. The ideal molecular regulation strategy endowed the Lyocell/PA-ZnG fabrics with rapid-formation thermal insulation residuals and excellent fire safety, which could pass the vertical burning test with the limiting oxygen index (LOI) of 28.8 % at an ultra-low loading of 4.3 wt%. Notably, apart to the peak of heat release rate (pHRR) decreased by 58.6 %, the smoke maximum density (SMD) also decreased by 85.4 %, with respect to pure lyocell fabrics. Lyocell/PA-ZnG fabrics carried well antibacterial property for Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) with 99.99 % antibacterial rates due to the existence of Zn ion. Furthermore, the strong hydrogen bonding between cellulose and PA-ZnG enabled Lyocell/PA-ZnG fabrics to be excellent friction durability. The wearing properties of Lyocell/PA-ZnG fabrics, such as whiteness, moisture regain, and fabrics handle remained after finishing. The work provided a simple and efficient strategy for the eco-friendly preparation of multifunctional lyocell fabrics.