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Three minutes to understand the preparation and main applications of PLA

August 28,2023

Polylactic acid (PLA)  is a new type of biobased and renewable biodegradable material, which is made from starch raw material from renewable plant resources (e.g. corn, cassava, etc.). The starch raw material is saccharified to obtain glucose, and then the glucose and certain strains of bacteria are fermented to make high-purity lactic acid, and then a certain molecular weight of PLA is synthesized through chemical synthesis. It has good biodegradability and can be completely degraded by microorganisms in nature under specific conditions after use, eventually generating carbon dioxide and water without polluting the environment, which is very beneficial to the protection of the environment and is recognized as an environmentally friendly material.


Polylactic acid, also known as polylactide, belongs to the polyester family.

Polylactic acid is a polymer obtained by polymerizing lactic acid as the main raw material, and the source of raw material is sufficient and renewable, mainly corn, cassava and other raw materials. The production process of PLA is pollution-free, and the product can be biodegradable, realizing the cycle in nature, so it is an ideal green polymer material.

PLA  has good thermal stability, processing temperature 170~230℃, good solvent resistance, and can be processed in various ways, such as extrusion, spinning, biaxial stretching, injection blow molding. Products made of polylactic acid in addition to biodegradation, biocompatibility, gloss, transparency, feel and heat resistance, but also has a certain degree of bacterial resistance, flame retardant and anti-ultraviolet, so the use of a very wide range of packaging materials, fibers and nonwovens, etc., is mainly used in clothing (underwear, outerwear), industry (construction, agriculture, forestry, papermaking) and health care and other fields.

HUNAN GREEN STAR BIOTECHNOLOGY COMPANY is the largest PLA film paper manufacturer in Hunan, China, PLA production is still in the initial stage of development in our country, PLA has many applications in extrusion, injection molding, film, spinning and other fields of application.