Fabrication, Characterization, and Antibacterial Properties of Electrospun Membrane Composed of Gum Karaya, Polyvinyl Alcohol, and Silver Nanoparticles

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dc.contributor.authorPadil, Vinod Vellora Thekkae
dc.contributor.authorNguyen, Nhung H. A.
dc.contributor.authorŠevců, Alena
dc.contributor.authorČerník, Miroslav
dc.date.accessioned2016-05-24
dc.date.available2016-05-24
dc.date.issued2015-01-01
dc.description.abstractGum karaya (GK), a natural hydrocolloid, was mixed with polyvinyl alcohol (PVA) at different weight ratios and electrospun to produce PVA/GK nanofibers. An 80 : 20 PVA/GK ratio produced the most suitable nanofiber for further testing. Silver nanoparticles (Ag-NPs) were synthesised through chemical reduction of AgNO3 (at different concentrations) in the PVA/GK solution, the GK hydroxyl groups being oxidised to carbonyl groups, and Ag+ cations reduced to metallic Ag-NPs. These PVA/GK/Ag solutions were then electrospun to produce nanofiber membranes containing Ag-NPs (Ag-MEMs). Membrane morphology and other characteristics were analysed using scanning electron microscopy coupled with energy dispersive X-ray analysis, transmission electron microscopy, and UV-Vis and ATR-FTIR spectroscopy. The antibacterial activity of the Ag-NP solution and Ag-MEM was then investigated against Gram-negative Escherichia coli and Pseudomonas aeruginosa and Gram-positive Staphylococcus aureus. Our results show that electrospun nanofiber membranes based on natural hydrocolloid, synthetic polymer, and Ag-NPs have many potential uses in medical applications, food packaging, and water treatment.en
dc.description.sponsorshipMinistry of Education, Youth and Sports in the framework of the targeted support of the "National Programme for Sustainability I," [LO1201]; OPR DI Project; OP VaVpI of the Centre for Nanomaterials, Advanced Technologies and Innovation [CZ.1.05/2.1.00/01.0005]; "Project Development of Research Teams for R & D Projects" at the Technical university of Liberec [CZ.1.07/2.3.00/30.0024]; Competence Centre [TE01020218]
dc.formattext
dc.identifier.doi10.1155/2015/750726
dc.identifier.issn1687-4110
dc.identifier.scopus2-s2.0-84929631086
dc.identifier.urihttps://dspace.tul.cz/handle/15240/16379
dc.identifier.urihttps://www.hindawi.com/journals/jnm/2015/750726/
dc.language.isoen
dc.publisherHindawi Publishing Corporation
dc.publisherTechnická Univerzita v Libercics
dc.publisherTechnical university of Liberec, Czech Republicen
dc.relation.ispartofJournal Of Nanomaterialsen
dc.sourcej-scopus
dc.sourcej-wok
dc.titleFabrication, Characterization, and Antibacterial Properties of Electrospun Membrane Composed of Gum Karaya, Polyvinyl Alcohol, and Silver Nanoparticlesen
dc.typeArticle
local.accessοpen
local.facultyInstitute for Nanomaterials, Advanced Technologies and Innovation
local.fulltextyes
local.identifier.publikace42
local.identifier.wok354677000001
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