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dc.contributor.CRUESPUNIVERSIDADE DE ESTADUAL DE CAMPINASpt_BR
dc.typeArtigo de periódicopt_BR
dc.titleImproved Antibacterial Activity Of Nanofiltration Polysulfone Membranes Modified With Silver Nanoparticlespt_BR
dc.contributor.authorAndradept_BR
dc.contributor.authorPatricia Fernanda; de Fariapt_BR
dc.contributor.authorAndreia Fonseca; Oliveirapt_BR
dc.contributor.authorSilvana Ruella; Zezzi Arrudapt_BR
dc.contributor.authorMarco Aurelio; Goncalvespt_BR
dc.contributor.authorMaria do Carmopt_BR
unicamp.author.emailmaria@iqm.unicamp.brpt_BR
unicamp.authorGoncalves, Maria do Carmo] Univ Campinas UNICAMP, Inst Chem, BR-13083970 Campinas, SP, Brazilpt_BR
unicamp.author.external[Andrade, Patricia Fernandapt
unicamp.author.externalde Faria, Andreia Fonsecapt
unicamp.author.externalOliveira, Silvana Ruellapt
unicamp.author.externalZezzi Arruda, Marco Aureliopt
unicamp.author.external[Oliveira, Silvana Ruellapt
unicamp.author.externalZezzi Arruda, Marco Aurelio] Natl Inst Sci & Technol Bioanalyt INCTBio, BR-13083970 Campinas, SP, Brazilpt
dc.subjectUltrafiltration Membranespt_BR
dc.subjectNanocomposite Membranespt_BR
dc.subjectPoly(1-vinylpyrrolidone-co-acrylonitrile) Copolymerspt_BR
dc.subjectEscherichia-colipt_BR
dc.subjectNanomaterialspt_BR
dc.subjectFabricationpt_BR
dc.subjectMicrofiltrationpt_BR
dc.subjectPerformancept_BR
dc.subjectMechanismspt_BR
dc.subjectFiltrationpt_BR
dc.description.abstractPolysulfone membranes (PSf) containing silver nanoparticles were prepared by the wet phase-inversion process. Silver nanoparticles (AgNP) were dispersed into the polymer matrix using two different methodologies. In the first one, the AgNP were synthesized and further dispersed into the polymer solution (ex situ process). In the second method, the formation of the AgNP was performed in situ. The AgNP crystalline structure in the PSf membranes was confirmed by X-ray diffraction. Field emission scanning electron microscopy images showed that the addition of AgNP in PSf membranes caused no significant changes to the finger-like morphology. When the ex situ methodology was applied, 45 nm average size AgNP were uniformly distributed in the internal pores of the membranes. However, when the AgNP were formed through the in situ process, the AgNP were uniformly and preferentially distributed on the top and bottom surfaces of the membrane. In the last case, the AgNP showed cubic morphology when present in the bottom and top surfaces, however, when inside the membrane their morphology was spherical. The cubic-like nanoparticles displayed a 38 nm average edge length. The silver ion released from the membrane during water filtration was measured using inductively coupled plasma mass spectrometry, which showed a silver leaching of approximately 2 mu g L-1. The nano-composite membranes prepared by the in situ method exhibited a better antibacterial activity, in comparison to those prepared by ex situ, and also a decrease in 90% Escherichia coli adhered cells compared to the pristine PSf membranes. In conclusion, the in situ procedure can be considered a feasible, simple, and reproducible methodology to prepare anti-biofouling polysulfone membranes containing AgNP. (C) 2015 Elsevier Ltd. All rights reserved.en
dc.relation.ispartofWATER RESEARCHpt_BR
dc.publisher.countryOXFORDpt_BR
dc.publisherPERGAMON-ELSEVIER SCIENCE LTDpt_BR
dc.date.issued2015-SEPpt_BR
dc.identifier.citationImproved Antibacterial Activity Of Nanofiltration Polysulfone Membranes Modified With Silver Nanoparticles. Pergamon-elsevier Science Ltd, v. 81, p. 333-342 SEP-2015.pt_BR
dc.language.isoenpt_BR
dc.description.volume81pt_BR
dc.description.firstpage333pt_BR
dc.description.lastpage342pt_BR
dc.rightsfechadopt_BR
dc.sourceWOSpt_BR
dc.identifier.issn0043-1354pt_BR
dc.identifier.wosidWOS:000358805000035pt_BR
dc.identifier.doi10.1016/j.watres.2015.05.006pt_BR
dc.identifier.urlhttp://www.sciencedirect.com/science/article/pii/S0043135415002857pt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipNational Institute of Science, Technology and Innovation in Complex Functional Materials (Inomat/INCT)pt_BR
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.sponsorship1Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorship1Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorship1Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.sponsordocumentnumberFAPESP [2010/17804-7]pt
dc.description.sponsordocumentnumberCNPq [573644/2008-0]pt
dc.date.available2016-06-07T13:21:21Z-
dc.date.accessioned2016-06-07T13:21:21Z-
dc.description.provenanceMade available in DSpace on 2016-06-07T13:21:21Z (GMT). No. of bitstreams: 1 wos_000358805000035.pdf: 2037277 bytes, checksum: eb8088097b3f0588e6f09c9fb8c8d08c (MD5) Previous issue date: 2015en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/243066-
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