This paper presents an overview of extruded thermoplastic starch (TPS) foam process and important
considerations to manufacture TPS blown foam (loose-fill as well as sheets) using a physical blowing agent (water). The
properties of the starch foams depend on the type of starch used (hydroxypropylated high amylose corn starch, 70%
amylose), the amount of blowing agent (water) and additives (poly (hydroxyamino ether)) used