Starch bases are compounds with one or more biopolyesters as the main matrix mixed with starch (plasticised or not).
The incorporation rate of starch is generally between 30 and 50 % depending on the formulation. The interest of these materials lies in the combination of the good mechanical and processing properties of polyesters, with the increase in the proportion of biobased materials and the possible biodegradation acceleration conferred by starch.
This type of material is widely used on the market for extrusion applications (film, bags, etc.), and now also for injection or thermoforming.