Polylactic acid (PLA) fiber is made of carbohydrate-rich substances (such as long rice, sugar beet, cassava and other crops and organic waste) fermented into lactic acid with a certain strain, and then cyclized and dimerized by monomeric lactic acid. High-performance lactic acid polymer is prepared by direct polymerization of lactic acid, and finally a certain spinning method is used to make PLA fiber. Since corn and other grains are often used as raw materials, it is also called "corn fiber".
PLA fiber raw materials are derived from nature, and product waste can be completely degraded into H2O and CO2 required by nature, realizing a complete natural cycle. It is a fiber material with great development prospects in the 21st century.