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      One-step synthesis of size-tunable Ag nanoparticles incorporated in electrospun PVA/cyclodextrin nanofibers

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      Author(s)
      Celebioglu A.
      Aytac Z.
      Umu, O. C. O.
      Dana, A.
      Tekinay, T.
      Uyar, Tamer
      Date
      2014
      Source Title
      Carbohydrate Polymers
      Print ISSN
      0144-8617
      Publisher
      Pergamon Press
      Volume
      99
      Pages
      808 - 816
      Language
      English
      Type
      Article
      Item Usage Stats
      334
      views
      621
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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
      Cyclodextrin
      Electrospinning
      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/11693/26482
      Published Version (Please cite this version)
      http://dx.doi.org/10.1016/j.carbpol.2013.08.097
      Collections
      • Institute of Materials Science and Nanotechnology (UNAM) 2258
      • Nanotechnology Research Center (NANOTAM) 1179
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