A controllable , universal, and natural supramolecular assembly coating strategy for multifunctionality textiles of antibacterial properties, UV resistance, antioxidant, and secondary reactivity

Abstract

The development of multifunctional, stable, and secondarily reactive surface coatings is highly desirable, regardless of the surface structure and chemistry of the textile. However, it has remained a great challenge until now. Commonly used strategies for textile surface functionalization are limited to certain types of fibers or weak and unreliable surface bonds, as well as colored surfaces. Herein, a supramolecular assembly strategy involving phase-transited lysozyme (PTL) and tannic acid (TA) is proposed, which can be used to functionalize various textiles through simple padding and drying. This coating has been shown to withstand 50 washing cycles and 100 rubbing cycles. The PTL/TA coating not only effectively improves the antibacterial properties of textiles (with a 99% bacteriostatic rate), but also enhances UV resistance and antioxidant properties. Additionally, the PTL/TA coating can serve as a secondary reaction platform to prepare X-PTL/TA@fabrics with various functionalities. For instance, sol-gel functional finishing can be employed to achieve hydrophobic modification of fabrics. Furthermore, electroless deposition of Cu on the coating surface can impart infrared stealth and electromagnetic shielding properties to the fabric. PTL/TA coatings exhibit promising practical application prospects as a bridge between various textiles and multifunctionality.