Universal Preparation Strategy for Ultradurable Antibacterial Fabrics through Coating an Adhesive Nanosilver Glue

Abstract

Microbiological protection textile materials played an important role in the battle against the epidemic. However, the traditional active antimicrobial treatment of textiles suffers from narrow textile applicability, low chemical stability, and poor washability. Here, a high-strength adhesive nanosilver glue was synthesized by introducing nontoxic water-soluble polyurethane glue as a protectant. The as-prepared nanosilver glue could adhere firmly to the fiber surfaces by forming a flexible polymer film and could encapsulate nanosilver inside the glue. The as-prepared nanosilver had a torispherical structure with diameter of ~22 nm, zeta potential of −42.7 mV, and good dispersibility in water, and it could be stored for one year. Further studies indicated that the nanosilver glue had wide applicability to the main fabric species, such as cotton and polyester fabric, surgical mask, latex paint, and wood paint. The antimicrobial cotton and polyester fabrics were prepared by a simple impregnation–padding–baking process. The corresponding antimicrobial activity was positively correlated with nanosilver content. The treated fabrics (500 mg/kg) exhibited ultrahigh washing resistance (maintained over 99% antibacterial rates for 100 times of standard washing) and wear resistance (99% antibacterial rates for 8000 times of standard wearing), equivalent breathability to untreated fabric, improved mechanical properties, and good flexibility, demonstrating a potential in cleanable and reusable microbiological protection textiles.

Green Method for the Preparation of Durable Superhydrophobic Antimicrobial Polyester Fabrics with Micro-Pleated Structures

“…The TEM results in Figure 1d demonstrated the uniform dispersion of the PDMS polymer and generated Ag nanomonomers in water. The inset at the top right shows Ag monomers with a particle size of approximately 9.7 nm, consistent with the findings in the literature [38], confirming the successful preparation of silver nanoparticles. The particle size of the PDMS/Ag-water emulsion was approximately 317.25 nm, and after approximately one hour of standing, it slightly increased to 363.69 nm due to the movement of oil droplet molecules (Figure 1e,f).…”

“…PDMS/Ag–water emulsion: The preparation of silver nano-solutions followed an improved protocol based on previously reported methods [ 38 ]. Initially, 404 mL of a solution of silver nitrate at a concentration of 7.8 g/L was thoroughly stirred in a thermostatic oscillator (THZ-C, Suzhou Peiying Experimental Equipment Co., Ltd., Suzhou, China) until complete dissolution was achieved.…”

Multifunctional Finishing of Cotton Fabric with Curcumin Derivatives Coatings Obtained by Sol–Gel Method

“…Thus, textile-finishing methods have been studied using different agents with biocidal activity such as metal or metal oxide nanoparticles, quaternary ammonium compounds, triclosan, dyes, and chitosan to obtain antimicrobial textiles [27][28][29][30][31]. Depending on their nature, these biocidal substances have been conditioned in the form of nanoparticles, nanocomposites, and gels, and then encapsulated in organic or inorganic matrices to favor their most efficient application as a finishing agent or incorporated into the fiber without losing their initial properties [32][33][34][35][36][37][38]. One of the most widely used finishing methods for textile fabrics is to deposit nanosols obtained by the sol-gel method.…”