PLA is one of the mainstream degradable plastic products. Polylactic acid is a polymer polymerized from lactic acid as the main raw material. It is currently the most mature, industrialized, and most widely used biodegradable plastic in the world.
PLA is one of the most common degradable plastics. PLA (polylactic acid) is a polymer obtained by polymerization of lactic acid produced by biological fermentation as the main raw material. A single lactic acid molecule has a hydroxyl group and a carboxyl group. When multiple lactic acid molecules are together, the hydroxyl group is dehydrated and condensed with the carboxyl groups of other molecules, and the carboxyl group is dehydrated and condensed with the hydroxyl groups of other molecules to form polylactic acid.
The source of PLA raw materials is sufficient and renewable, the production process is pollution-free, and the product can be biodegradable. After use, PLA can be composted and degraded into carbon dioxide and water at a temperature higher than 55°C or under the action of oxygen and microorganisms to achieve in nature. The material recycling will not affect the environment, so it is an ideal green polymer material.
PLA also has reliable biological safety, biodegradability, good mechanical properties and easy processing. It is widely used in packaging, textile industry, agricultural film and biomedical polymers and other industries. The disadvantage of PLA is that the degradation conditions are relatively harsh.
