The basic steps to create polylactic acid from corn are as follows:
- First corn starch must be converted into sugar through a mechanical process called wet milling. ...
- Next, the dextrose is fermented. ...
- The lactic acid is then converted into lactide, a ring-form dimer of lactic acid.
How is PLA made?
PLA is a polyester made through the fermentation under controlled conditions of a carbohydrate source like corn starch or sugarcane. ... The starch is then mixed with acid or enzymes and heated. This process “breaks” starch into dextrose (D-glucose), or corn sugar.
What is polylactic acid made up of?
Polylactic Acid (PLA) is a bioplastic made from lactic acid and is used in the food industry to package sensitive food products. However, PLA is too fragile and is not compatible with many packaging manufacturing processes. Therefore it should be strengthen with additives.
