2026-04-28T08:15:04Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/55162022-09-19T22:42:05Zcom_10259_4244com_10259_5086com_10259_2604col_10259_4245

Roque Viadas, Lara 2d8283d9-974e-4c7e-b850-23659b742050 500 Fernández López, María 3fc351eb-94de-4590-8bd7-f003d9631e9d 500 Benito Moreno, José Manuel 58 500 Escudero Barbero, Isabel 161 500 2020-10-15T08:06:58Z 2020-10-15T08:06:58Z 2020-09 0927-7757 http://hdl.handle.net/10259/5516 10.1016/j.colsurfa.2020.124999 This work reports the study of surface and aggregation properties of formulations containing mixed niosomes of the non-ionic surfactant sorbitan monooleate (Span 80) and the cationic surfactant cetyltrimethylammonium bromide (CTAB), in concentrations of 20 and 4 mol/m3, respectively, in salt-free water and in the presence of NaCl (20, 50 and 80 mol/m3). The aim of this work was the formulation of stable Span 80 and CTAB mixed niosomes with low surfactant concentration. The mixed niosomes were prepared by ultrasonication and their properties (surface tension, particle size distribution, ζ-potential, stability over time and morphology) were measured using different techniques. Data were analyzed and compared with those of the individual surfactants. Experimental results show that the addition of salt decreased the critical micelle concentration (CMC) and the surface tension of the surfactant dispersions with relation to their free-salt formulations. The presence of CTAB in the mixed niosome bilayer decreased the particle size and increased the stability of the mixed niosomes in all the formulations studied, compared with those of single Span 80. Synergism between both surfactants was obtained in the formation of niosome bilayers for formulations in pure water and with 20 and 50 mol/m3 of salt, while antagonism was observed in that of 80 mol/m3 NaCl. These results may allow the use of CTAB adsorbed on mixed niosomes in industrial applications, taking advantage of its antiseptic and antibacterial properties and solving the limitation imposed by its high Krafft temperature. Junta de Castilla y León and the European Regional Development Fund (ERDF) through project BU301P18. application/pdf eng Elsevier Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2020, V. 601, 124999 https://doi.org/10.1016/j.colsurfa.2020.124999 info:eu-repo/grantAgreement/JCyL/BU301P18 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Niosomes Span 80 CTAB Surfactants Stability Synergism Ingeniería química Chemical engineering Stability and characterization studies of Span 80 niosomes modified with CTAB in the presence of NaCl info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Colloids and Surfaces A: Physicochemical and Engineering Aspects 601 124999 TEXT Roque-csa_2020.pdf.txt Roque-csa_2020.pdf.txt Extracted text text/plain 66885 https://riubu.ubu.es/bitstream/10259/5516/5/Roque-csa_2020.pdf.txt 93573ee0922fdcf26a0531dae38645cd MD5 5 THUMBNAIL Roque-csa_2020.pdf.jpg Roque-csa_2020.pdf.jpg IM Thumbnail image/jpeg 3658 https://riubu.ubu.es/bitstream/10259/5516/4/Roque-csa_2020.pdf.jpg 39fdce48c6ffb8dabb5240690e17eb06 MD5 4 LICENSE license.txt license.txt text/plain; charset=utf-8 998 https://riubu.ubu.es/bitstream/10259/5516/3/license.txt aa90105e1c90a1b4fe810649aa967b7d MD5 3 CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 805 https://riubu.ubu.es/bitstream/10259/5516/2/license_rdf 4460e5956bc1d1639be9ae6146a50347 MD5 2 ORIGINAL Roque-csa_2020.pdf Roque-csa_2020.pdf application/pdf 2199819 https://riubu.ubu.es/bitstream/10259/5516/1/Roque-csa_2020.pdf 4d680eba88d8260061322acb889bf01f MD5 1 10259/5516 oai:riubu.ubu.es:10259/5516 2022-09-20 00:42:05.955 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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