Reversible buckling and diffusion properties of silica-coated hydrogel particles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F11%3A43892074" target="_blank" >RIV/60461373:22330/11:43892074 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22340/11:43892074

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jcis.2011.01.106" target="_blank" >http://dx.doi.org/10.1016/j.jcis.2011.01.106</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jcis.2011.01.106" target="_blank" >10.1016/j.jcis.2011.01.106</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Reversible buckling and diffusion properties of silica-coated hydrogel particles

Popis výsledku v původním jazyce

The structure and diffusion properties of composite particles consisting of a calcium alginate hydrogel core and a thin SiO2 surface layer have been investigated. The composite particles were formed by depositing a silica layer onto calcium alginate cores using a sol-gel process starting from alkoxysilane precursors. The composite particles were found to have a remarkable ability to reversibly rehydrate and return to their original size and shape after partial drying. The organo-silica skin was able tosustain large local deformations (such as complete folding) without the formation of cracks or defects. Such mechanical properties are uncharacteristic of pure silica and they can be attributed to the specific microstructure of the alginate-silica composite. The structure and composition of the alginate-silica particles were characterised by SEM, X-ray micro-tomography, Laser Scanning Confocal Microscopy and Thermo-gravimetry. In order to quantify the effect of the organo-silica layer on

Název v anglickém jazyce

Reversible buckling and diffusion properties of silica-coated hydrogel particles

Popis výsledku anglicky

The structure and diffusion properties of composite particles consisting of a calcium alginate hydrogel core and a thin SiO2 surface layer have been investigated. The composite particles were formed by depositing a silica layer onto calcium alginate cores using a sol-gel process starting from alkoxysilane precursors. The composite particles were found to have a remarkable ability to reversibly rehydrate and return to their original size and shape after partial drying. The organo-silica skin was able tosustain large local deformations (such as complete folding) without the formation of cracks or defects. Such mechanical properties are uncharacteristic of pure silica and they can be attributed to the specific microstructure of the alginate-silica composite. The structure and composition of the alginate-silica particles were characterised by SEM, X-ray micro-tomography, Laser Scanning Confocal Microscopy and Thermo-gravimetry. In order to quantify the effect of the organo-silica layer on

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/GD104%2F08%2FH055" target="_blank" >GD104/08/H055: Transportní a reakční procesy v komplexních vícefázových systémech</a><br>

Návaznosti

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

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Journal of Colloid and Interface Science

ISSN

0021-9797

e-ISSN

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Svazek periodika

357

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

109-115

Kód UT WoS článku

000288773400016

EID výsledku v databázi Scopus

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