Antimicrobial activity of cellulose-based nanofibers with different Ag phases

Jang, Ki Hyuk; Yu, Young Joon; Lee, Young Ha; Kang, Yun Ok; Park, Won Ho

doi:10.1016/j.matlet.2013.11.028

Cited by 21 publications

(3 citation statements)

References 19 publications

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“…The kinetics is affected not only by the properties of the nanomaterials (e.g., the amount and type of the biocide, the release of the biocide and the structure of the fiber), but also by the antibacterial test method used. Using the direct contact method, CA nanofibers loaded with silver ions or AgNP (0.5% or 1% on polymer wt) were found to kill E. coli quickly, with a killing rate of >99% after a contact time of 5 min, and 100% after 30 min contact . This kinetics is very similar to that reported in conventional microfibers coated with PHMB .…”

Section: Evaluation Of Antibacterial Efficacysupporting

confidence: 67%

Electrospun antibacterial nanofibers: Production, activity, andin vivoapplications

Gao

Truong

Zhu

et al. 2014

J of Applied Polymer Sci

161

110

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Electrospinning is an economical and relatively simple method to produce continuous and uniform nanofibers from almost any synthetic and many natural polymers. Because of the high specific surface area, tunable pore size, and flexibility, the nanofibrous membranes are finding an increasingly wide range of applications. Some particular attention has been devoted to antibacterial nanofibers for applications such as wound dressings. A variety of biocides, e.g., antibiotics, quaternary ammonium salts, triclosan, biguanides, (silver, titanium dioxide, and zinc oxide) nanoparticles and chitosan have been incorporated by various techniques into nanofibers that exhibit strong antibacterial activity in standard assays. However, the small diameters of the nanofibers also mean that the incorporated biocides are often burst released once the materials are submerged in an aqueous solution. Nevertheless, several strategies, such as coresheath structure of the nanofiber, covalent bonding of the biocide on the fiber surface and adsorption of the biocide in nanostructures, can be utilized to sustain the release over several days. This review summarizes recent development in the fabrication of antibacterial nanofibers, the release profiles of the biocides and their applications in in vivo systems.

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Section: Evaluation Of Antibacterial Efficacysupporting

confidence: 67%

Electrospun antibacterial nanofibers: Production, activity, andin vivoapplications

Gao

Truong

Zhu

et al. 2014

J of Applied Polymer Sci

161

110

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“…[ 14–16 ] One of the most common antimicrobials are silver nanoparticles (Ag NPs), which exhibit competitive advantages due to their stable, potent, and broad‐spectrum antimicrobial capacity. [ 17–19 ] Although there is no consensus regarding the antimicrobial mechanisms of Ag NPs, the promising antimicrobial efficacy of Ag NP‐impregnated biopolymers has been well‐documented. [ 20–22 ] Furthermore, compared with surface modification of biopolymers (e.g., dip‐coating with a silver salt solution followed by reduction of Ag + ions), impregnation of Ag NPs into the biopolymer matrix confers prolonged antimicrobial properties.…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial Biocomposites Fiber‐Welded with Lignocellulose Containing Silver Nanoparticles

Shen

Gulbrandson

Park

et al. 2022

Macro Materials & Eng

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Biopolymer materials that use silver to imbue antimicrobial properties are finding broad application in areas such as packaging, textiles, and building materials. Conventional methods to incorporate silver can damage the supporting biopolymer matrix and/or result in large‐sized silver nanoparticles (Ag NPs) with poor antimicrobial efficacy. To mitigate these concerns, in this study, uniformly distributed, small (≈5–10 nm) Ag NPs are grown into a well‐preserved lignocellulose powder matrix by using a gas‐phase reducing agent at low temperature. The Ag NP‐ lignocellulose powders are fully characterized and their antimicrobial performance is investigated by inactivating planktonic bacteria and inhibiting biofilms. The most potent antimicrobial product, L_10Ag, achieves more than 4‐log reduction in planktonic bacterial viability within 3 h and a biofilm inhibition rate of 97.9%. Furthermore, the Ag NP impregnated powders are post‐processed through natural fiber welding (NFW), an emergent, innovative, ionic liquid (IL)‐based method that can be used to engineer biopolymer materials into new functional biocomposites. NFW transforms the powders into higher‐order structures, imparting anti‐microbial capacity without degrading the material properties of the biopolymer support.

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“…Nanocoating on the textile surface is an approach to produce highly active surfaces with UV blocking, antimicrobial, and self‐cleaning properties. For instance, antimicrobial properties are exerted by nano‐silver [8–10] and self‐cleaning of wine and coffee stains using a solar stimulated light is imparted by nano‐TiO 2 coating [11]. Metal oxides like ZnO as a UV blocker are more stable compared to organic UV‐blocking agents.…”

Section: Introductionmentioning

confidence: 99%

Alkaline treatment effect on the properties of in‐situ synthesised ZnO nanoparticles on cotton fabric

Barani

Boroumand

2016

IET nanobiotechnol.

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In this study, an in-situ approach was used to synthesise zinc oxide nanoparticles on the surface of cotton fabric. The effect of alkaline pre- and after-treatment and Zn(2+) concentration was studied on the morphological, structural, thermal, photocatalytic, and antibacterial properties of loaded cotton fabrics. Scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffractometer, thermogravimetric analysis, and attenuated total reflection Fourier transform infrared spectrometer were used to characterise the properties of loaded cotton fabrics. Alkaline after-treatment of cotton fabric presented more dispersed zinc oxide nanoparticles, and an increase in Zn(2+) concentration led to form agglomerated nanoparticles on the surface of cotton fibres. The loaded cotton fabrics with zinc oxide nanoparticles presented an inhibition zone against Staphylococcus aureus and Escherichia coli. In addition, the stain of methylene blue on the surface of loaded samples was degraded after irradiated under visible light.

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Antimicrobial activity of cellulose-based nanofibers with different Ag phases

Cited by 21 publications

References 19 publications

Electrospun antibacterial nanofibers: Production, activity, andin vivoapplications

Electrospun antibacterial nanofibers: Production, activity, andin vivoapplications

Antimicrobial Biocomposites Fiber‐Welded with Lignocellulose Containing Silver Nanoparticles

Alkaline treatment effect on the properties of in‐situ synthesised ZnO nanoparticles on cotton fabric

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