Controlling the internal microstructure and properties of physically cross-linked PVA hydrogels by the rate of freezing

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dc.contributor.authorTrudičová, Monikacs
dc.contributor.authorZahrádka, Jancs
dc.contributor.authorSedláček, Petrcs
dc.contributor.authorPekař, Miloslavcs
dc.date.accessioned2021-11-12T22:56:35Z
dc.date.available2021-11-12T22:56:35Z
dc.date.issued2021-01-01cs
dc.description.abstractPVA hydrogels can be formed via physical crosslinking (e.g. by cyclic freezing/thawing of aqueous polyvinyl alcohol solutions) or with a chemical cross-linker. Physical crosslinking is more useful for biomedical applications since it contains no harmful cross-linker residues. This work, therefore, focused on studying properties of physically crosslinked hydrogels with different concentrations of polyvinyl alcohol (2.5 to 15 wt%) prepared via cyclic freezing/thawing under different cryogenic conditions: in the liquid nitrogen (-196 degrees C), in two different laboratory freezers (-80 degrees C and -18 degrees C) and the ice bath. Furthermore, the effects of the addition of several cryoprotectants were evaluated. The optical and mechanical properties of the prepared samples were studied, and the microstructure of the hydrogels was observed by scanning electron microscopy after freeze-drying.en
dc.formattextcs
dc.format.extent547-552cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationProceedings 12th International Conference on Nanomaterials - Research & Application. 2021, p. 547-552.en
dc.identifier.doi10.37904/nanocon.2020.3769cs
dc.identifier.isbn978-80-87294-98-7cs
dc.identifier.other172085cs
dc.identifier.urihttp://hdl.handle.net/11012/202244
dc.language.isoencs
dc.publisherTANGER Ltd.cs
dc.relation.ispartofProceedings 12th International Conference on Nanomaterials - Research & Applicationcs
dc.relation.urihttps://www.confer.cz/nanocon/2020/3769-controlling-the-internal-microstructure-and-properties-of-physically-cross-linked-pva-hydrogels-by-the-rate-of-freezingcs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjecthydrogelen
dc.subjectpolyvinyl alcoholen
dc.subjectrheologyen
dc.subjectscanning electron microscopyen
dc.titleControlling the internal microstructure and properties of physically cross-linked PVA hydrogels by the rate of freezingen
dc.type.driverconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-172085en
sync.item.dbtypeVAVen
sync.item.insts2022.03.25 16:56:12en
sync.item.modts2022.03.25 16:14:54en
thesis.grantorVysoké učení technické v Brně. Fakulta chemická. Ústav fyzikální a spotřební chemiecs
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