Durably Antibacterial and Bacterially Antiadhesive Cotton Fabrics Coated by Cationic Fluorinated Polymers

Abstract

Considerable attention has been devoted to producing antibacterial fabrics due to their very wide applications in medicine, hygiene, hospital, etc. However, the poor antibacterial durability and bad bacterial antiadhesion capacity of most existing antibacterial fabrics limit their applications. In this work, a series of antibacterial and polymeric quaternary ammonium monomers with different alkyl chain length were successfully synthesized to copolymerize with fluorine-containing and other acrylic monomers to generate cationic fluorinated polymer emulsions and durably antibacterial and bacterially antiadhesive cotton fabrics. The relation between antibacterial constituent and its antibacterial activity was investigated. The study indicated that the alkyl chain length and contents of the antibacterial monomers, as well as the add-on percentage of polymer greatly influenced the antibacterial activities of the fabrics. In addition, it was found that incorporation of fluorine component into the polymer greatly enhanced the antibacterial activity and bacterial antiadhesion of the treated fabrics due to the low surface energy induced hydrophobicity. Finally, antibacterial and antiadhesive models of action of the obtained fabrics were illustrated.

Influence of poly‐l‐lysine molecular weight on antibacterial efficacy in polymer multilayer films

“…11,12 Antibacterial surface coatings aid in preventing biofilm formation and device-associated infections and have been used clinically to coat a range of medical surfaces including catheters, 13 implant nails, 14,15 wound dressings, 16 and pacemakers. 17 The primary mechanisms of antibacterial activity of these coatings include release-based killing (e.g., silver-eluting surfaces 18,19 ), contact killing (e.g., hydrophobic polycation-coated surfaces 20,21 ), and anti-adhesion (e.g., hyaluronic acid [HA]-coated surfaces 22 ). Multifunctional coatings integrating different antibacterial approaches that are capable of both inhibiting bacterial attachment (the first step of biofilm formation) and killing surrounding planktonic bacteria have the potential to mitigate serious infection-related complications.…”

Antibacterial Cotton Fabrics Coated by Biodegradable Cationic Silicone Softeners

“…What is more, due to a relatively shorter alkyl chain, the bacterial solution might more readily wet the surface of fabrics (Fig. c), thus facilitating the penetration of alkyl chains and cation radicals into cell membranes and improving the bacterial deactivation, as has been previously suggested by Lin et al () and Zhang et al (). Actually, bacterial adhesion onto the surfaces of antibacterial fabrics and the corresponding sterilization mechanism are complex processes, and its behavior is influenced by several parameters (the surface structure of the bacterial cells, the living environment, the physicochemical properties of the material surface, etc.).…”

Elastomagnetic nanofiber wires by magnetic field assisted electrospinning

“…The possibility of producing different types of nanofiber wires, able of a magnetically induced giant relative deformation, is very promising in view of their functionalization in those conditions where the filiform structure can lead to advantages. In fact, on the basis of recent bibliography, MENWs development seems to open renewals and finalizations for biomedical applications [43][44][45][46], sensing devices [47][48][49][50], electromagnetic components [51,52], absorbers [53,54], tissue engineering [7,55,56] and, in particular, to biocompatible components sensitive to external stimuli in order to regenerate or to activate the contraction and dilatation of tendons and muscles that have lost their functionality [57][58][59][60][61].…”