Fabrication of Durably Antibacterial Cotton Fabrics by Robust and Uniform Immobilization of Silver Nanoparticles via Mussel-Inspired Polydopamine/Polyethyleneimine Coating

Abstract

Bacterial contamination of cotton dressing can potentially cause wound infection. To solve this problem, stable and uniform decoration of silver nanoparticles (AgNPs) onto cotton fabrics is a promising strategy to endow antibacterial activity to prevent wound infection. Herein, a facile codeposition of polydopamine (PDA)/polyethyleneimine (PEI) was performed on cotton fabrics for uniformly cross-linking gallic acid (GA)-stabilized silver nanoparticles (GA@AgNPs) via Michael addition and hydrogen bonding interactions. The as-prepared GA@AgNPs/PDA–PEI-coated cotton fabrics possessed a negatively charged surface because of the high-density GA on AgNPs, showing low cytotoxicity, hemocompatibility, and hemostatic ability. Because of its stable, uniform, and anionic interface composed of GA@AgNPs, this GA@AgNPs/PDA–PEI coating could effectively resist bacterial adhesion by electrostatic repulsion and also kill the attached bacteria through sustained Ag+ release, exhibiting strong, broad-spectrum, and durable antibacterial activities toward bacteria. Therefore, these GA@AgNPs/PDA–PEI-coated cotton fabrics show great potential for clinical application as antibacterial wound dressings.

Ag nanoparticles-based antimicrobial polycotton fabrics to prevent the transmission and spread of SARS-CoV-2

“…The superficial modification through the incorporation of nanoparticles has been extensively studied and shows potential for obtaining devices with microbicidal activity. [28][29][30][31][32][33] In this scenario, nanoparticles can advantageously replace micrometric particles used in the finishes to obtain functional fabrics, because it has a greater surface area, resulting in a better adhesion to fabrics and, consequently, greater durability of functionality. Furthermore, it is possible to achieve a pronounced effect with small amounts of material not altering the original properties of the fabric.…”

Recent breakthroughs of antibacterial and antiviral protective polymeric materials during COVID-19 pandemic and after pandemic: Coating, packaging, and textile applications

“…This low-cytotoxicity modified fabric was resistant to bacteria owing to electrostatic repulsion. Also, with releasing Ag + , it had strong antimicrobial performances [ 45 ].…”

Unique “posture” of rose Bengal for fabricating personal protective equipment with enhanced daylight-induced biocidal efficiency

“…Thus, the development of innovative materials that can aggressively attack the pathogens has attracted much attention. For instance, antibacterial agents including silver nanoparticles, 5,6 TiO 2 , 7 N-halamines, [8][9][10] and organic photosensitizers [11][12][13][14] were incorporated onto PPE for providing enhanced protection by disinfecting and deactivating pathogens. Among them, organic photosensitizers (PS) (i.e., mostly are dyes) can generate reactive oxygen species (ROS), including hydroxyl radicals (HO•), hydroperoxide radical (HOO•), hydrogen peroxides (H 2 O 2 ), and singlet oxygen ( 1 O 2 ), under light irradiation.…”

“…Thus, the development of innovative materials that can aggressively attack pathogens has attracted much attention. For instance, antibacterial agents including silver nanoparticles, 5,6 TiO 2 , 7 N -halamines, 8–10 and organic photosensitizers 11–14 were incorporated onto PPE for providing enhanced protection by disinfecting and deactivating pathogens. Among them, organic photosensitizers (PSs) ( i.e.…”

“…µL) was dropped on the sample surface every 5 min to avoid inactivation of the microorganisms from elevated temperature and water evaporation during light illumination. After that, the residual bacteria on the fabric were extracted by mL of sterile PBS and were serially diluted (×10 0 , ×10 1 , ×10 , ×10 5 ) to be inoculated on a lysogeny agar plate or trypticase soy agar plate for E. coli and L.…”