Show simple item record

Jak supramolekulární charakter lignohumátu ovlivňje jeho difúzi v agarosovém hydrogelu

dc.contributor.authorKlučáková, Martinacs
dc.contributor.authorKalina, Michalcs
dc.contributor.authorEnev, Vojtěchcs
dc.date.accessioned2021-01-14T11:54:07Z
dc.date.available2021-01-14T11:54:07Z
dc.date.issued2020-12-10cs
dc.identifier.citationMOLECULES. 2020, vol. 25, issue 24, p. 5831-5843.en
dc.identifier.issn1420-3049cs
dc.identifier.other166455cs
dc.identifier.urihttp://hdl.handle.net/11012/195853
dc.description.abstractLignohumate, as an industrially produced analog of natural humic substances, is studied from the point of view of its diffusion properties. This work focuses on its permeation ability, important in agricultural and horticultural applications, connected with its penetration into plant organs as leaves and roots. The hydrogel based on agarose was used as a model material for the diffusion of lignohumate. Two types of experiments were realized: the diffusion of lignohumate in the hydrogel diffusion couple and the diffusion of lignohumate from its solution into hydrogel. The diffusion coefficient of lignohumate in the hydrogel was determined and used for the modelling of the time development of concentration profiles. It was found that the model agrees with experimental data for short times but an accumulation of lignohumate in front of the interface between donor and acceptor hydrogels was observed after several days. The particle size distribution of lignohumate and changes in the E4/E6 ratio used as an indicator of molecular weight of humic substances were determined. The results showed that the supramolecular structure of lignohumate can react sensitively to actual changes in its environs and thus affect their mobility and permeability into different materials. A filtration effect at the interface can be observed as an accompanying phenomenon of the re-arrangement in the lignohumate secondary structure.en
dc.description.abstractLignohumát je průmyslově vyráběný analog huminových látek. Podobně jako přírodní huminové látky má supramolekulární charkter, který mu dovoluje citlivě reagovat na změny v okolí a měnit tak svou molekulární organizaci. tato schopnost se mj. promítá do jeho transportních vlastností, jak popisuje tento článek.cs
dc.formattextcs
dc.format.extent5831-5843cs
dc.format.mimetypeapplication/pdfcs
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofMOLECULEScs
dc.relation.urihttps://www.mdpi.com/1420-3049/25/24/5831cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectlignohumateen
dc.subjectsupramolecular natureen
dc.subjectdiffusionen
dc.subjectspreadingen
dc.subjecthydrogelen
dc.subjectlignohumát
dc.subjectsupramoleculární charakter
dc.subjectdifúze
dc.subjectrozmývání
dc.subjecthydrogel
dc.titleHow the Supramolecular Nature of Lignohumate Affects Its Diffusion in Agarose Hydrogelen
dc.title.alternativeJak supramolekulární charakter lignohumátu ovlivňje jeho difúzi v agarosovém hydrogelucs
thesis.grantorVysoké učení technické v Brně. Fakulta chemická. Ústav fyzikální a spotřební chemiecs
sync.item.dbidVAV-166455en
sync.item.dbtypeVAVen
sync.item.insts2021.01.27 08:59:03en
sync.item.modts2021.01.27 08:15:38en
dc.coverage.issue24cs
dc.coverage.volume25cs
dc.identifier.doi10.3390/molecules25245831cs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1420-3049/cs
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

Creative Commons Attribution 4.0 International
Except where otherwise noted, this item's license is described as Creative Commons Attribution 4.0 International