Foaming with wheat flour and starch – a new processing technique to obtain highly porous hydroxyapatite ceramics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F18%3A43916812" target="_blank" >RIV/60461373:22310/18:43916812 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Foaming with wheat flour and starch – a new processing technique to obtain highly porous hydroxyapatite ceramics

Popis výsledku v původním jazyce

Foaming with wheat flour is a new processing technique for the preparation of porous ceramics. This contribution presents rheological studies of hydroxyapatite (HA) suspensions and describes the preparation of highly porous HA ceramics using this new technique. Suspensions with 30, 35 and 40 wt.% HA and different types and amounts of deflocculants have been prepared and quantitatively characterized via rotational viscometry. Further rheological studies have been performed for optimized suspensions with 35 wt.% HA and 0.7 wt.% polyelectrolyte solution (Dolapix CE64), to which 10 and 30 vol.% of corn starch or 20 vol.% of wheat flour, have been added. After foaming of the wheat-flour-containing suspensions via mechanical agitation, highly porous HA ceramics are obtained with 82-83 % porosity after firing at 850 °C. Microscopic image analysis and mercury intrusion porosimetry are used to characterize the hierarchical microstructure of HA ceramics with its partially sintered matrix.

Název v anglickém jazyce

Foaming with wheat flour and starch – a new processing technique to obtain highly porous hydroxyapatite ceramics

Popis výsledku anglicky

Foaming with wheat flour is a new processing technique for the preparation of porous ceramics. This contribution presents rheological studies of hydroxyapatite (HA) suspensions and describes the preparation of highly porous HA ceramics using this new technique. Suspensions with 30, 35 and 40 wt.% HA and different types and amounts of deflocculants have been prepared and quantitatively characterized via rotational viscometry. Further rheological studies have been performed for optimized suspensions with 35 wt.% HA and 0.7 wt.% polyelectrolyte solution (Dolapix CE64), to which 10 and 30 vol.% of corn starch or 20 vol.% of wheat flour, have been added. After foaming of the wheat-flour-containing suspensions via mechanical agitation, highly porous HA ceramics are obtained with 82-83 % porosity after firing at 850 °C. Microscopic image analysis and mercury intrusion porosimetry are used to characterize the hierarchical microstructure of HA ceramics with its partially sintered matrix.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20504 - Ceramics

Projekt

<a href="/cs/project/GA18-17899S" target="_blank" >GA18-17899S: Částečně a plně slinutá keramika - příprava, mikrostruktura, vlastnosti, modelování a teorie slinování</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 14th International Conference on Polysaccharides – Glycoscience

ISBN

978-80-86238-80-7

ISSN

2336-6796

e-ISSN

neuvedeno

Počet stran výsledku

6

Strana od-do

132-137

Název nakladatele

Česká společnost chemická

Místo vydání

Praha

Místo konání akce

Praha

Datum konání akce

7. 11. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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