One-step synthesis of size-tunable Ag nanoparticles incorporated in electrospun PVA/cyclodextrin nanofibers
Date
2014Source Title
Carbohydrate Polymers
Print ISSN
0144-8617
Publisher
Pergamon Press
Volume
99
Pages
808 - 816
Language
English
Type
ArticleItem Usage Stats
334
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Abstract
One-step synthesis of size-tunable silver nanoparticles (Ag-NP) incorporated into electrospun nanofibers was achieved. Initially, in situ reduction of silver salt (AgNO3) to Ag-NP was carried out in aqueous solution of polyvinyl alcohol (PVA). Here, PVA was used as reducing agent and stabilizing polymer as well as electrospinning polymeric matrix for the fabrication of PVA/Ag-NP nanofibers. Afterwards, hydroxypropyl-beta-cyclodextrin (HPβCD) was used as an additional reducing and stabilizing agent in order to control size and uniform dispersion of Ag-NP. The size of Ag-NP was ∼8 nm and some Ag-NP aggregates were observed for PVA/Ag-NP nanofibers, conversely, the size of Ag-NP decreased from ∼8 nm down to ∼2 nm within the fiber matrix without aggregation were attained for PVA/HPβCD nanofibers. The PVA/Ag-NP and PVA/HPβCD/Ag-NP nanofibers exhibited surface enhanced Raman scattering (SERS) effect. Moreover, antibacterial properties of PVA/Ag-NP and PVA/HPβCD/Ag-NP nanofibrous mats were tested against Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) bacteria.
Keywords
CyclodextrinElectrospinning
Nanofibers
Polyvinyl alcohol (PVA)
Silver nanoparticles (Ag-NP)
Antibacterial properties
Electrospun nanofibers
Poly (vinyl alcohol) (PVA)
Silver nanoparticles
Stabilizing agents
Staphylococcus aureus
Surface enhanced Raman Scattering (SERS)
Uniform dispersions
Bacteria
Cyclodextrins
Electrospinning
Escherichia coli
Nanofibers
Nanoparticles
Polyvinyl alcohols
Surface scattering
Silver
Bacteria (microorganisms)
Escherichia coli
Negibacteria
Posibacteria
Staphylococcus aureus
2 hydroxypropyl beta cyclodextrin
2-hydroxypropyl-beta-cyclodextrin
Antiinfective agent
Beta cyclodextrin derivative
Cyclodextrin
Metal nanoparticle
Nanofiber
Polyvinyl alcohol
Silver
Article
Chemistry
Drug effect
Electrochemical analysis
Electrospinning
Escherichia coli
Growth, development and aging
Oxidation reduction reaction
Particle size
Polyvinyl alcohol (PVA)
Raman spectrometry
scanning electron microscopy
Silver nanoparticles (Ag-NP)
Staphylococcus aureus
Surface property
Ultrastructure
Cyclodextrin
Electrospinning
Nanofibers
Polyvinyl alcohol (PVA)
Silver nanoparticles (Ag-NP)
Anti-Bacterial Agents
Beta-Cyclodextrins
Electrochemical Techniques
Escherichia coli
Metal Nanoparticles
Microscopy, Electron, Scanning
Nanofibers
Oxidation-Reduction
Particle Size
Polyvinyl Alcohol
Silver
Spectrum Analysis, Raman
Staphylococcus aureus
Surface Properties
Permalink
http://hdl.handle.net/11693/26482Published Version (Please cite this version)
http://dx.doi.org/10.1016/j.carbpol.2013.08.097Collections
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