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Polylactic acid has good thermal stability, processing temperature 170~230℃

2020-12-21

Chinese name
Polylactic acid

English name
polylactic acid

nickname
polylactide; PLA

Chemical formula
(C3H4O2)n

CAS Registry Number
26100-51-6

Melting point
155-185°C

density
1.20-1.30 kg/L

application
Injection molding such as children's tableware, blown film such as shopping bags, spinning such as clothing diapers and sanitary napkins, etc.

PLA is the English abbreviation of polylactic acid, written as: polylactic acid

Polylactic acid is also called polylactide and belongs to the polyester family. Polylactic acid is a polymer obtained by polymerization of lactic acid as the main raw material. The raw material source is sufficient and renewable. It mainly uses corn and cassava as raw materials. The production process of polylactic acid is pollution-free, and the product can be biodegraded to realize the circulation in nature, so it is an ideal green polymer material.

Polylactic acid has good thermal stability, the processing temperature is 170~230℃, and it has good solvent resistance. It can be processed in various ways, such as extrusion, spinning, biaxial stretching, and injection blow molding. In addition to being biodegradable, products made of polylactic acid have good biocompatibility, gloss, transparency, hand feel and heat resistance, and have certain bacteria resistance, flame retardancy and UV resistance, so they are very useful It can be widely used as packaging materials, fibers and nonwovens, etc. It is currently mainly used in clothing (underwear, outerwear), industry (construction, agriculture, forestry, papermaking), and medical and health fields.

The price of PLA before large-scale industrialization was USD 1,000/kg. Later, the industrialization research of the research group of Professor Ramani Narayan of Michigan State University achieved large-scale production. The technology is now industrialized by Natureworks.

The largest manufacturer of PLA is NatureWorks of the United States, followed by Hisun Biotechnology in China. Their current output is 100,000 tons and 15,000 tons respectively. PLA has many applications, such as extrusion, injection molding, film drawing, spinning and other fields.

PLA black PLA

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