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Sonochemical synthesis and stabilization of concentrated antimicrobial silver-chitosan nanoparticle dispersions
dc.contributor.author | Francesko, Antonio |
dc.contributor.author | Petkova, Petya |
dc.contributor.author | Mendoza Gómez, Ernesto |
dc.contributor.author | Tzanov, Tzanko |
dc.contributor.author | Cano Fossas, Marta |
dc.contributor.author | Fernandes, Margarita M. |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Química |
dc.date.accessioned | 2017-05-15T11:31:53Z |
dc.date.available | 2018-08-01T00:30:32Z |
dc.date.issued | 2017-08 |
dc.identifier.citation | Francesko, A., Cano, M., Petkova, P., Fernandes, M.M., Mendoza, E., Tzanov, T. Sonochemical synthesis and stabilization of concentrated antimicrobial silver-chitosan nanoparticle dispersions. "Journal of applied polymer science", Agost 2017, vol. 134, núm. 30, p. 45136 (1)-45136 (8). |
dc.identifier.issn | 1097-4628 |
dc.identifier.uri | http://hdl.handle.net/2117/104415 |
dc.description.abstract | This work reports on a green synthetic route to produce concentrated aqueous dispersions of silver nanoparticles (AgNP) employing high-intensity ultrasound (US) and chitosan (CS) as a non-toxic reducing agent for Ag1 salts and AgNP stabilizer. The sonication simultaneously boosted the synthesis and improved the stability of the AgNP, capping them with CS. Hybrid AgNP-CS antimicrobial dispersions, stable for at least 6 months, were synthesized in a simple single step process. The use of US allowed for applying relatively mild processing temperatures (608C) and reaction time between 30 min and 3 h to obtain concentrated disper- sions of AgNP that otherwise could not be obtained even after 72 h under mechanical stirring at the same reaction conditions. Upon sonication spherical AgNP-CS with a size between 60 and 100 nm were generated, in contrast to the average diameter of 200 nm of the particles obtained by stirring. The antibacterial efficiency of the AgNP-CS hybrids was evaluated against the medically relevant pathogens Staphylococcus aureus and Escherichia coli. The US-synthesized AgNP-CS showed more than 3-fold higher antibacterial activity compared to the particles obtained under stirring, due to their higher concentration and smaller size. |
dc.language.iso | eng |
dc.publisher | Wiley |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria dels materials |
dc.subject | Àrees temàtiques de la UPC::Enginyeria dels materials::Materials compostos |
dc.subject.lcsh | Composite materials |
dc.subject.lcsh | Nanoparticles |
dc.subject.lcsh | Bacteria |
dc.subject.lcsh | Nanocrystals |
dc.subject.other | Composites |
dc.subject.other | Manufacturing |
dc.subject.other | Nanocrystals |
dc.subject.other | Nanoparticles |
dc.subject.other | Nanowires |
dc.subject.other | Synthesis and processing techniques |
dc.title | Sonochemical synthesis and stabilization of concentrated antimicrobial silver-chitosan nanoparticle dispersions |
dc.type | Article |
dc.subject.lemac | Materials compostos |
dc.subject.lemac | Nanopartícules |
dc.subject.lemac | Bacteris |
dc.subject.lemac | Nanocristalls |
dc.contributor.group | Universitat Politècnica de Catalunya. GBMI - Grup de Biotecnologia Molecular i Industrial |
dc.identifier.doi | 10.1002/APP.45136 |
dc.relation.publisherversion | http://onlinelibrary.wiley.com.recursos.biblioteca.upc.edu/doi/10.1002/app.45136/epdf |
dc.rights.access | Open Access |
local.identifier.drac | 20092894 |
dc.description.version | Postprint (author's final draft) |
dc.relation.projectid | info:eu-repo/grantAgreement/EC/H2020/720851/EU/Pre-commercial lines for production of surface nanostructured antimicrobial and anti-biofilm textiles, medical devices and water treatment membranes/PROTECT |
local.citation.author | Francesko, A.; Cano, M.; Petkova, P.; Fernandes, M.M.; Mendoza, E.; Tzanov, T. |
local.citation.publicationName | Journal of applied polymer science |
local.citation.volume | 134 |
local.citation.number | 30 |
local.citation.startingPage | 45136 (1) |
local.citation.endingPage | 45136 (8) |
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