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

Author(s)

Cilla, Marcelo Strozi ^{[1, 2]} ; Morelli, Marcio Raymundo ^[2] ; Colombo, Paolo ^{[1, 3]}

Affiliation

^[1] Univ Padua, Dipartimento Ingn Ind, Padua - Italy

^[2] Univ Fed Sao Carlos, Grad Program Mat Sci & Engn, BR-13560 Sao Carlos, SP - Brazil

^[3] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 - USA

• Document type: Journal article
• Source: Journal of the European Ceramic Society; v. 34, n. 12, p. 3133-3137, OCT 2014.
• Web of Science Citations: 28

Abstract

Using a novel saponification/peroxide/gelcasting combined route it was possible to produce geopolymer foams with a total porosity of similar to 85 vol%, open porosity as high as similar to 70 vol%, average cell size (D50) of 318 mu m, and possessing a specific surface area of 50 m(2)/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. (C) 2014 Elsevier Ltd. All rights reserved. (AU)

• FAPESP's process: 12/14581-2 - Conventional process and new methods of obtaining porous geopolymers structures
• Grantee: Marcelo Strozi Cilla
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate