Open cell geopolymer foams by a novel saponification/peroxide/gelcasting combined route

Using a novel saponification/peroxide/gelcasting combined route it was possible to produce geopolymer foams with a total porosity of ∼85vol%, open porosity as high as ∼70vol%, average cell size (D50) of 318μm, and possessing a specific surface area of 50m2/g. The in situ formation of surfactants by...

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Veröffentlicht in:Journal of the European Ceramic Society Jg. 34; H. 12; S. 3133 - 3137
Hauptverfasser: Cilla, Marcelo Strozi, Morelli, Márcio Raymundo, Colombo, Paolo
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Elsevier Ltd 01.10.2014
Schlagworte:
Combined route
Gelcasting
Geopolymer foams
Peroxide
Saponification
Combined route
Geopolymer foams
Gelcasting
Peroxide
Saponification
ISSN:0955-2219, 1873-619X
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Zusammenfassung:Using a novel saponification/peroxide/gelcasting combined route it was possible to produce geopolymer foams with a total porosity of ∼85vol%, open porosity as high as ∼70vol%, average cell size (D50) of 318μm, and possessing a specific surface area of 50m2/g. The in situ formation of surfactants by the saponification reaction of oil in the geopolymer alkaline environment led to increased total and open porosity in comparison to alternative methods for the fabrication of geopolymer foams.
ISSN:0955-2219
1873-619X
DOI:10.1016/j.jeurceramsoc.2014.04.001