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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F21%3APU141264" target="_blank" >RIV/00216305:26310/21:PU141264 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.confer.cz/nanocon/2020/3769-controlling-the-internal-microstructure-and-properties-of-physically-cross-linked-pva-hydrogels-by-the-rate-of-freezing" target="_blank" >https://www.confer.cz/nanocon/2020/3769-controlling-the-internal-microstructure-and-properties-of-physically-cross-linked-pva-hydrogels-by-the-rate-of-freezing</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37904/nanocon.2020.3769" target="_blank" >10.37904/nanocon.2020.3769</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

PVA 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.

Název v anglickém jazyce

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

Popis výsledku anglicky

PVA 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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/LD15047" target="_blank" >LD15047: Studium vztahu mezi strukturou, transportními a tokovými vlastnostmi biopolymerních gelů na mikro- i makroskopické úrovni.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings 12th International Conference on Nanomaterials - Research & Application

ISBN

978-80-87294-98-7

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

547-552

Název nakladatele

TANGER Ltd.

Místo vydání

Ostrava

Místo konání akce

Brno, Hotel Voroněž

Datum konání akce

21. 10. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000664505500093