Diffusion of dyes in polyelectrolyte-surfactant hydrogels

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dc.contributor.authorKlučáková, Martinacs
dc.contributor.authorHavlíková, Martinacs
dc.contributor.authorMravec, Filipcs
dc.contributor.authorPekař, Miloslavcs
dc.coverage.issue1cs
dc.coverage.volume12cs
dc.date.accessioned2022-05-27T10:53:46Z
dc.date.available2022-05-27T10:53:46Z
dc.date.issued2022-04-25cs
dc.description.abstractIn this work, hydrogels formed by interaction of biopolymeric electrolytes and oppositely charged surfactants are studied from the point of view of their ability to incorporate model hydrophobic dyes in their micelle-like structure. Two types of hydrogels were investigated. The first type was based on cationized dextran cross-linked by sodium dodecylsulphate. The second type was prepared by interactions of hyaluronan with carbethoxypendecinium bromide (septonex). Nile red and Atto488 were used as model dyes for the diffusion experiments. The dyes were dissolved in two different media: surfactant and physiological saline. The diffusion of dyes into hydrogel was monitored over time. Effective diffusion coefficients were determined. It was found that their values are strongly influenced by the hydrogel character, the types of dye used and the solvent. The obtained effective coefficients were higher in comparison with the values determined for the diffusion in the opposite direction (release from the hydrogel). The dyes are presented as free in physiological saline and in the form of micelles or micelle aggregates in surfactants. During diffusion into the hydrogel, they can be gradually incorporated in a “pearl necklace structure” which suppresses their mobility. In contrast, this partial immobilization of dyes can increase the concentration gradient which is a driving force of diffusion. Also, the gradual incorporation of dyes into hydrogel structures influences the values of the effective diffusion coefficients.en
dc.description.abstractNilská červeň a Atto 488 byly použity jako modelová barviva pro studium transportních vlastnosttí hydrogelů připravených na bázi polyelektrolytů a opačně nabitých tenzidů. Jako polyelektrolyty byly použity kationizovaný dextran a hyaluronan dvou různých molárních hmotností. Opačně nabitými tenzidy byly SDS v případě dextranu a Septonex v případě obou hyaluronanů.cs
dc.formattextcs
dc.format.extent13242-13250cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationRSC Advances. 2022, vol. 12, issue 1, p. 13242-13250.en
dc.identifier.doi10.1039/d2ra02379bcs
dc.identifier.issn2046-2069cs
dc.identifier.other177726cs
dc.identifier.urihttp://hdl.handle.net/11012/204461
dc.language.isoencs
dc.publisherRoyal Society of Chemistrycs
dc.relation.ispartofRSC Advancescs
dc.relation.urihttps://pubs.rsc.org/en/content/articlelanding/2022/RA/D2RA02379Bcs
dc.rightsCreative Commons Attribution-NonCommercial 3.0 Unportedcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2046-2069/cs
dc.rights.urihttp://creativecommons.org/licenses/by-nc/3.0/cs
dc.subjecthyaluronanen
dc.subjectcationized dextranen
dc.subjectsurfactanten
dc.subjectdyeen
dc.subjectmicelleen
dc.subjectdiffusionen
dc.subjecthyaluronan
dc.subjectkationizovaný dextran
dc.subjecttenzid
dc.subjectbarvivo
dc.subjectmicela
dc.subjectdifúze
dc.titleDiffusion of dyes in polyelectrolyte-surfactant hydrogelsen
dc.title.alternativeDifuze barviv v polyelektrolyto-tenzidových hydrogelechcs
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-177726en
sync.item.dbtypeVAVen
sync.item.insts2023.02.20 12:50:54en
sync.item.modts2023.02.20 12:12:45en
thesis.grantorVysoké učení technické v Brně. Fakulta chemická. Ústav fyzikální a spotřební chemiecs
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