Roll to roll in situ preparation of recyclable, washable, antibacterial Ag loaded nonwoven fabric

Abstract

Functional fabrics with antibacterial performance are more welcome nowadays. However, the fabrication of functional fabrics with durable, steady performance via a cost-effective way remains a challenge. Polypropylene (denoted as PP) nonwoven fabric was modified by polyvinyl alcohol (denoted as PVA), followed by the in-situ deposition of silver nanoparticles (denoted as Ag NPs) to afford PVA-modified and Ag NPs-loaded PP (denoted as Ag/PVA/PP) fabric. The encapsulation of PP fiber by PVA coating contributes to greatly enhancing the adhesion of the loaded Ag NPs to the PP fiber, and the Ag/PVA/PP nonwoven fabrics exhibit significantly improved mechanical properties as well as excellent antibacterial activity against Escherichia coli (coded as E. coli). Typically, the Ag/PVA/PP nonwoven fabric obtained at a silver ammonia concentration of 30 mM has the best mechanical properties and the antibacterial rate reaches 99.99% against E. coli. The fabric retains excellent antibacterial activity even after washing for 40 cycles, showing prospects in reuse. Moreover, the Ag/PVA/PP nonwoven fabric could find promising application in industry, thanks to its desired air-permeability and moisture-permeability. In addition, we developed a roll-to-roll production process and conducted preliminary exploration to verify the feasibility of this method.

Advancements of eco‐friendly natural antimicrobial agents and their transformative role in sustainable textiles

“…Subsequently, the fabric undergoes repeated immersions in a silver ammonia solution to facilitate the in‐situ deposition of Ag NPs. The concentration of the modifier, the molar ratio, the concentration of the solution, and the reaction temperature are critical factors that influence the deposition of Ag NPs 170 …”

“…Schematic diagram showing the preparation of Ag/PVA/PP non‐woven fabrics and their antibacterial action against bacteria. Reproduced under the terms of CC‐BY‐NC‐ND 4.0 170 . Copyright 2022, Nature.…”

“…The concentration of the modifier, the molar ratio, the concentration of the solution, and the reaction temperature are critical factors that influence the deposition of Ag NPs. 170 Sustainable and eco-friendly monochlorotriazinyl β-cyclodextrin was applied to viscose fabric via chemical modification, subsequently treated with active ingredients like green tea extract and Aloe vera gel. The treated fabric displayed antibacterial effects against E. coli and S. aureus, albeit with some decline in efficacy.…”

One-step antibacterial modification of polypropylene non-woven fabricsviaoxidation using photo-activated chlorine dioxide radicals

“…Current methods for the antibacterial modification of PP NWFs are costly and require multiple steps, rendering them impractical for industrial use. [24][25][26][27][28] Hence, there is a need for an efficient and cost-effective method for the antibacterial modification of PP NWFs.…”

Web Wrinkle Defects due to Temperature Profile in Roll-to-Roll Manufacturing Systems

“…The roll-to-roll manufacturing system is a continuous manufacturing process, in which high-speed manufacturing enables mass production [ 1 , 2 , 3 ]. Traditionally, roll-to-roll manufacturing is applied to manufacture products made from plastic film, paper, and fabric [ 4 , 5 , 6 , 7 , 8 ]. In recent years, the system has become a promising candidate for mass producing flexible batteries, flexible copper-clad layers, and bioelectric sensors on a thin substrate [ 9 , 10 , 11 , 12 , 13 ].…”