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Antimicrobial Bilayer Nanocomposites Based on the Incorporation of As-Synthetized Hollow Zinc Oxide Nanotubes

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Antimicrobial Bilayer Nanocomposites Based on the Incorporation of As-Synthetized Hollow Zinc Oxide Nanotubes

dc.contributor.author	Falcó Ferrando, Irene Lourdes
dc.contributor.author	López de Dicastillo, Carol
dc.contributor.author	Patiño Vidal, Cristian
dc.contributor.author	Sánchez, Gloria
dc.contributor.author	Márquez, Paulina
dc.contributor.author	Escrig, Juan
dc.date.accessioned	2023-05-26T08:35:48Z
dc.date.available	2023-05-26T08:35:48Z
dc.date.issued	2020
dc.identifier.citation	Falcó Ferrando, Irene Lourdes López de Dicastillo, Carol Patiño Vidal, Cristian Sánchez, Gloria Márquez, Paulina Escrig, Juan 2020 Antimicrobial Bilayer Nanocomposites Based on the Incorporation of As-Synthetized Hollow Zinc Oxide Nanotubes Nanomaterials 10 3 503 516
dc.identifier.uri	https://hdl.handle.net/10550/86959
dc.description.abstract	An antimicrobial polymeric bilayer structure based on the application of an acrylic coating containing hollow zinc oxide nanotubes over a polymeric substrate was developed in this work. Firstly, zinc oxide nanotubes (ZnONT) were obtained by an atomic layer deposition (ALD) process over electrospun polyvinyl alcohol nanofibers followed by polymer removal through calcination with the purpose of obtaining antimicrobial nanostructures with a high specific area. Parameters of electrospinning, ALD, and calcination processes were set in order to obtain successfully hollow zinc oxide nanotubes. Morphological studies through scanning electron microscopy (SEM) and transmission electron microscopy (TEM) microscopies confirmed the morphological structure of ZnONT with an average diameter of 180 nm and thickness of approximately 60 nm. Thermal and X-ray diffraction (XRD) analyses provided evidence that calcination completely removed the polymer, resulting in a crystalline hexagonal wurtzite structure. Subsequently, ZnONT were incorporated into a polymeric coating over a polyethylene extruded film at two concentrations: 0.5 and 1 wt. % with respect to the polymer weight. An antimicrobial analysis of developed antimicrobial materials was performed following JIS Z2801 against Staphylococcus aureus and Escherichia coli. When compared to active materials containing commercial ZnO nanoparticles, materials containing ZnONT presented higher microbial inhibition principally against Gram-negative bacteria, whose reduction was total for films containing 1 wt. % ZnONT. Antiviral studies were also performed, but these materials did not present significant viral reduction.
dc.language.iso	eng
dc.relation.ispartof	Nanomaterials, 2020, vol. 10, num. 3, p. 503-516
dc.subject	Microbiologia
dc.subject	Materials nanoestructurats
dc.subject	Materials
dc.title	Antimicrobial Bilayer Nanocomposites Based on the Incorporation of As-Synthetized Hollow Zinc Oxide Nanotubes
dc.type	journal article
dc.date.updated	2023-05-26T08:35:49Z
dc.identifier.doi	10.3390/nano10030503
dc.identifier.idgrec	159274
dc.rights.accessRights	open access