79569 20200716101447.0 doi 10.1002/jctb.5749 sideral 109732 ART-2019-109732 eng Baldino, L. Production, characterization and testing of antibacterial PVA membranes loaded with HA-Ag3PO4 nanoparticles, produced by SC-CO2 phase inversion 2019 Access copy available to the general public Unrestricted BACKGROUND: Silver-loaded hydroxyapatite nanoparticles were incorporated into poly(vinyl alcohol) (PVA) membranes obtained by supercritical CO2 (SC-CO2) assisted phase inversion. Ag3PO4 crystals of 2.2 ± 0.6 nm were dispersed in synthesized needle-like hydroxyapatite nanoparticles (20 × 65 nm) and were uniformly deposited on the internal surfaces of the PVA membranes. Operative conditions to produce membranes by SC-CO2, PVA concentration and the effect on membrane porosity and morphology were studied. RESULTS: Solutions at 20% w/w PVA produced membranes with cellular morphology and nanoporous walls, whereas 30% and 50% w/w solutions produced nanostructured membranes. Silver ions were released from PVA membranes mainly by diffusion according to the Peppas–Sahlin model. Membranes obtained at 20% w/w PVA showed a significant E. coli inhibition at an Ag concentration of 9 ppm, reaching the minimal inhibitory concentration (MIC) and improving the bactericidal activity of the nanoparticles. CONCLUSION: A concentration of Ag3PO4 crystals of about 22 ppm was calculated as being capable of completely destroying these bacteria, reaching the minimum bactericidal concentration (MBC). info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 2.75 2019 BIOTECHNOLOGY & APPLIED MICROBIOLOGY 72 / 156 = 0.462 2019 Q2 T2 CHEMISTRY, MULTIDISCIPLINARY 84 / 177 = 0.475 2019 Q2 T2 ENGINEERING, CHEMICAL 60 / 143 = 0.42 2019 Q2 T2 ENGINEERING, ENVIRONMENTAL 28 / 53 = 0.528 2019 Q3 T2 0.661 2019 Inorganic Chemistry 2019 Q1 Chemical Engineering (miscellaneous) 2019 Q1 Fuel Technology 2019 Q2 Waste Management and Disposal 2019 Q2 Organic Chemistry 2019 Q2 Pollution 2019 Q2 Renewable Energy, Sustainability and the Environment 2019 Q2 Biotechnology 2019 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Aragón, J. (orcid)0000-0003-2293-363X Mendoza, G. Universidad de Zaragoza (orcid)0000-0002-2966-9088 Irusta, S. Universidad de Zaragoza Cardea, S. Reverchon, E. 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 5005 790 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Tecnologi. Medio Ambiente 94, 1 (2019), 98-108 J. chem. technol. biotechnol. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY 0268-2575 1350027 http://zaguan.unizar.es/record/79569/files/texto_completo.pdf Postprint 59436 http://zaguan.unizar.es/record/79569/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:79569 articulos driver 2020-07-16-09:04:05 ARTICLE