Effect of the Processing Parameters on the Fabrication of MgAlO Foams.

Stable MgAlO foams (7-21 vol.%) were manufactured using a natural extract from the pericarp of the soap-nut fruit, saponin being the main component, as the foaming agent. The soap-nut extract is soluble in water, biodegradable, non-toxic, and has similar properties to commercial tensoactives.