To use this flour, it can first be reacted with a plasticizer (e.g. glycerol): we then obtain a so-called plasticized starch, which gives it a thermoplastic behaviour that makes it easier to process with plastics processing equipment (extruder, injection press, etc.).
This plasticized starch is generally used in a mixture with biodegradable polyesters (PBAT, PBS, PLA, etc.) to achieve good mechanical properties and obtain a compound that is called a starch base.