Silver-Incorporated Nanocellulose Fibers for Antibacterial Hydrogels

Shin, Ji Un; Gwon, Jaegyoung; Lee, Sun-Young; Yoo, Hyuk Sang

doi:10.1021/acsomega.8b02180

Cited by 55 publications

(25 citation statements)

References 35 publications

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“…Bacterial cellulose incorporated with magnetite NPs and Ag NPs possesses magnetic properties as well as antimicrobial activity against the Escherichia coli and Bacillus subtilis . Shin et al . fabricated Ag NPs via in‐situ reduction of silver ions in CNF matrix and then embedded in alginate hydrogels.…”

Section: Introductionsupporting

confidence: 92%

Antimicrobial Activity of Composite Consisting of Cellulose Nanofibers and Silver Nanoparticles

et al. 2019

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In this work influence of silver (Ag) nanoparticles (NPs) on cellulose nanofibers (CNF) was investigated. Free standing composite films of CNF/ polyvinylalcohol (PVA) ‐ Ag NPs have been synthesized by ex‐situ method. Composite films with different Ag NPs content (1%, 10% and 20%) were obtained and characterized by various techniques such as UV‐visible absorption spectroscopy, field emission scanning electron microscopy (FESEM), Infrared (IR) spectroscopy and Thermo gravimetric analysis (TGA). A UV‐vis absorption spectroscopy study demonstrates that as Ag NPs content increases the optical transparency decreases. The FESEM studies of the composite films revealed the presence of Ag NPs with average size ∼ 20 nm. Infrared spectroscopy illustrates that the CNF/PVA and Ag NPs are bound through electrostatic interactions. Comparison of the thermal properties of the CNF/PVA and the CNF/PVA ‐ Ag composite films showed that the thermal stability is improved for the highest Ag content composite films. It is shown that the CNF/PVA ‐ Ag composites have potential antibacterial effects against Gram‐positive bacteria (Bacillus subtilis) and Gram‐negative bacteria (Escherichia coli).

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Section: Introductionsupporting

confidence: 92%

Antimicrobial Activity of Composite Consisting of Cellulose Nanofibers and Silver Nanoparticles

et al. 2019

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“…The antibacterial effects observed at concentrations in the 1-7 µg/mL range are similar to those reported elsewhere [37,38]. Using function-ally crosslinked CNC loaded with silver nanoparticles, other workers have shown these hydrogels to be antibacterial against Gram negative [39,40] and Gram positive [39] bacteria.…”

Section: Discussionsupporting

confidence: 82%

The Manufacture and Characterization of Silver Diammine Fluoride and Silver Salt Crosslinked Nanocrystalline Cellulose Films as Novel Antibacterial Materials

Jackson

Dietrich

Shademani

et al. 2021

Gels

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There is an unmet need for biocompatible, anti-infective, and mechanically strong hydrogels. This study investigated the use of poly vinyl alcohol (PVA), polysaccharides, and nanocrystalline cellulose (CNC) to deliver silver in a controlled manner for possible use against oral or wound bacteria. Silver was included in solvent cast films as silver diammine fluoride (SDF) or as nitrate, sulphate, or acetate salts. Hydrogel formation was assessed by swelling determinations and silver release was measured using inductively coupled plasma methods. Antibacterial studies were performed using Gram-positive and negative bacteria turbidity assays. PVA formed homogenous, strong films with SDF and swelled gently (99% hydrolyzed) or vigorously with dissolution (88% hydrolyzed) and released silver slowly or quickly, respectively. CNC-SDF films swelled over a week and formed robust hydrogels whereas CNC alone (no silver) disintegrated after two days. SDF loaded CNC films released silver slowly over 9 days whereas films crosslinked with silver salts were less robust and swelled and released silver more quickly. All silver loaded films showed good antibacterial activity. CNC may be crosslinked with silver in the form of SDF (or any soluble silver salt) to form a robust hydrogel suitable for dental use such as for exposed periodontal debridement areas.

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“…[125] Shin et al utilized formaldehyde as a reducing agent to prepare Ag NPs through the reduction reaction of Ag + that were electrostatically adsorbed onto the surface of TEMPO-oxidized cellulose nanofibers. [126] The immobilized Ag NPs were subsequently embedded in SA hydrogels. The SA@Ag NPs hydrogels can continuously release Ag + for a long time to significantly inhibit the growth of E. coli without cytotoxicity to normal cells.…”

Section: Natural Polymeric Matrixmentioning

confidence: 99%

Antibacterial Hybrid Hydrogels

Cao

Luo

et al. 2020

Macromolecular Bioscience

122

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Bacterial infectious diseases and bacterial‐infected environments have been threatening the health of human beings all over the world. In view of the increased bacteria resistance caused by overuse or improper use of antibiotics, antibacterial biomaterials are developed as the substitutes for antibiotics in some cases. Among them, antibacterial hydrogels are attracting more and more attention due to easy preparation process and diversity of structures by changing their chemical cross‐linkers via covalent bonds or noncovalent physical interactions, which can endow them with various specific functions such as high toughness and stretchability, injectability, self‐healing, tissue adhesiveness and rapid hemostasis, easy loading and controlled drug release, superior biocompatibility and antioxidation as well as good conductivity. In this review, the recent progress of antibacterial hydrogel including the fabrication methodologies, interior structures, performances, antibacterial mechanisms, and applications of various antibacterial hydrogels is summarized. According to the bacteria‐killing modes of hydrogels, several representative hydrogels such as silver nanoparticles‐based hydrogel, photoresponsive hydrogel including photothermal and photocatalytic, self‐bacteria‐killing hydrogel such as inherent antibacterial peptides and cationic polymers, and antibiotics‐loading hydrogel are focused on. Furthermore, current challenges of antibacterial hydrogels are discussed and future perspectives in this field are also proposed.

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Silver-Incorporated Nanocellulose Fibers for Antibacterial Hydrogels

Cited by 55 publications

References 35 publications

Antimicrobial Activity of Composite Consisting of Cellulose Nanofibers and Silver Nanoparticles

Antimicrobial Activity of Composite Consisting of Cellulose Nanofibers and Silver Nanoparticles

The Manufacture and Characterization of Silver Diammine Fluoride and Silver Salt Crosslinked Nanocrystalline Cellulose Films as Novel Antibacterial Materials

Antibacterial Hybrid Hydrogels

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