Biodegradable foams based on starch, polyvinyl alcohol, chitosan and sugarcane fibers obtained by extrusion

Biodegradable foams made from cassava starch, polyvinyl alcohol (PVA), sugarcane bagasse fibers and chitosan were obtained by extrusion. The composites were prepared with formulations dependant on a constrained ternary mixtures experimental design, applying as variables: starch / PVA, fibers and chitosan from glucose cane. The consequences of varying proportions of these three pieces on foam real estate were studied, as well the relationship around their foam and properties microstructure. The addition of starch/PVA in increased proportions increased the expansion index and mechanical resistance of studied foams. Fibers addition improved the growth and mechanical homes of the foams. There is