*2.4. Plasticization of Starch to Thermoplastic Starch (TPS)*

Five grams of corn starch powder was added with 100 mL water into 250 mL beaker. After that, 2 g of glycerine was added into the starch solution to plasticize the starch. Then, the mixture was continuously stirred using a magnetic stirrer (500 rpm) for 45 min in a water bath, in which the temperature was maintained to be around 75–85 ◦C. A gel-like suspension of starch was obtained, showing that the starch has been transformed into the TPS.
