Abstract
Starch foams from native cassava starch/cross‐linked starch blends were prepared by baking in a hot mold. The native cassava starch/cross‐linked starch ratio was varied in the series of 100/0, 80/20, 60/40, 50/50, 40/60, 20/80, and 0/100. The effect of the native cassava starch/cross‐linked starch ratio on the properties of foams including density, morphology, water adsorption, impact strength, and thermal stability was investigated. The blending of cross‐linked starch resulted in a higher density of the foams. The impact strength of the blend foams were between 232 and 268 J/m2. The adsorption of water by the modified starch (7.3%) and the blend foams (11–12%) was lower than for the native cassava starch foam (13.9%). The size of the cells in the blend starch foam was between the cell size of the native cassava starch and the cross‐linked starch foams.
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