Cellulose nanocrystals/silver nanoparticles: <i>in-situ</i> preparation and application in PVA films

Li, Fan; Zhang, Hui; Gao, Mengxi; Zhang, Meng; Liu, Pengtao; Liu, Xinliang

doi:10.1515/hf-2018-0251

Cited by 42 publications

(27 citation statements)

References 24 publications

(24 reference statements)

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“…Standard deviation values highlight a variation in the range of 5-15% from the mean value, highlighting the good repeatability in the tensile properties. These results are coherent with the ones reported by Thiagamani et al [47] for banana peel powder and AgNPs cellulose-based films and by Fan et al [48] for cellulose nanocrystals and AgNPs PVA films.…”

Section: Film Characterizationsupporting

confidence: 92%

Solvent Casting and UV Photocuring for Easy and Safe Fabrication of Nanocomposite Film Dressings

et al. 2022

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The aim of this work was to optimize and characterize nanocomposite films based on gellan gum methacrylate (GG-MA) and silver nanoparticles (AgNPs) for application in the field of wound dressing. The films were produced using the solvent casting technique coupled with a photocuring process. The UV irradiation of GG-MA solutions containing glycerol as a plasticizer and different amounts of silver nitrate resulted in the concurrent crosslinking of the photocurable polymer and a reduction of Ag ions with consequent in situ generation of AgNPs. In the first part of the work, the composition of the films was optimized, varying the concentration of the different components, the GG-MA/glycerol and GG-MA/silver nitrate weight ratios as well as the volume of the film-forming mixture. Rheological analyses were performed on the starting solutions, whereas the obtained films were characterized for their mechanical properties. Colorimetric analyses and swelling studies were also performed in order to determine the AgNPs release and the water uptake capacity of the films. Finally, microbiological tests were carried out to evaluate the antimicrobial efficacy of the optimized films, in order to demonstrate their possible application as dressings for the treatment of infected hard-to-heal wounds, which is a demanding task for public healthcare.

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Section: Film Characterizationsupporting

confidence: 92%

Solvent Casting and UV Photocuring for Easy and Safe Fabrication of Nanocomposite Film Dressings

et al. 2022

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“…In this context, both selected polysaccharides, namely ulvan and cellulose nanocrystals (CNC), have been demonstrated to be biocompatible and to have relevant tissue healing properties. Moreover, their use as stabilizing agents of metallic nanoparticles has been recently confirmed, supporting the possible suitability of these macromolecules to be employed as biomaterials [31][32][33][34].…”

Section: Introductionmentioning

confidence: 82%

Development and Characterization of Highly Stable Silver NanoParticles as Novel Potential Antimicrobial Agents for Wound Healing Hydrogels

Massironi

Franco

Babo

et al. 2022

IJMS

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Recurrent microbial infections are a major cause of surgical failure and morbidity. Wound healing strategies based on hydrogels have been proposed to provide at once a barrier against pathogen microbial colonization, as well as a favorable environment for tissue repair. Nevertheless, most biocompatible hydrogel materials are more bacteriostatic than antimicrobial materials, and lack specific action against pathogens. Silver-loaded polymeric nanocomposites have efficient and selective activity against pathogenic organisms exploitable for wound healing. However, the loading of metallic nanostructures into hydrogels represents a major challenge due to the low stability of metal colloids in aqueous environments. In this context, the aim of the present study was the development of highly stable silver nanoparticles (AgNPs) as novel potential antimicrobial agents for hyaluronic acids hydrogels. Two candidate stabilizing agents obtained from natural and renewable sources, namely cellulose nanocrystals and ulvan polysaccharide, were exploited to ensure high stability of the silver colloid. Both stabilizing agents possess inherent bioactivity and biocompatibility, as well as the ability to stabilize metal nanostructures thanks to their supramolecular structures. Silver nitrate reduction through sodium borohydride in presence of the selected stabilizing agents was adopted as a model strategy to achieve AgNPs with narrow size distribution. Optimized AgNPs stabilized with the two investigated polysaccharides demonstrated high stability in phosphate buffer saline solution and strong antimicrobial activity. Loading of the developed AgNPs into photocrosslinked methacrylated hyaluronic acid hydrogels was also investigated for the first time as an effective strategy to develop novel antimicrobial wound dressing materials.

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“…Li Fan and Hui Zhang et al studied the use of CNCs as carriers and stabilizers for AgNPs on polyvinyl chloride nanocomposites ( Figure S4 ). It was found that the AgNPs have been successfully prepared with an average size of 25 nm in spherical form and dispersed uniformly on the surface of CN-like uniform sizes [ 46 ].…”

Section: Cellulose Formsmentioning

confidence: 99%

Cellulose–Silver Composites Materials: Preparation and Applications

et al. 2021

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Cellulose has received great attention owing to its distinctive structural features, exciting physico−chemical properties, and varied applications. The combination of cellulose and silver nanoparticles currently allows to fabricate different promising functional nanocomposites with unique properties. The current work offers a wide and accurate overview of the preparation methods of cellulose–silver nanocomposite materials, also providing a punctual discussion of their potential applications in different fields (i.e., wound dressing, high-performance textiles, electronics, catalysis, sensing, antimicrobial filtering, and packaging). In particular, different preparation methods of cellulose/silver nanocomposites based on in situ thermal reduction, blending and dip-coating, or additive manufacturing techniques were thoroughly described. Hence, the correlations among the structure and physico–chemical properties in cellulose/silver nanocomposites were investigated in order to better control the final properties of the nanocomposites and analyze the key points and limitations of the current manufacturing approaches.

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Cellulose nanocrystals/silver nanoparticles: in-situ preparation and application in PVA films

Cited by 42 publications

References 24 publications

Solvent Casting and UV Photocuring for Easy and Safe Fabrication of Nanocomposite Film Dressings

Solvent Casting and UV Photocuring for Easy and Safe Fabrication of Nanocomposite Film Dressings

Development and Characterization of Highly Stable Silver NanoParticles as Novel Potential Antimicrobial Agents for Wound Healing Hydrogels

Cellulose–Silver Composites Materials: Preparation and Applications

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