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聚乳酸(Poly Lactide-Acid,PLA)是乳酸的一种重要衍生物,以淀粉为主原料,经连续式乳酸发酵和连续式废溶剂法乳酸聚合而成,具有良好的物理性能、机械性能及加工性能,更重要的是其具有良好的降解性能,在堆肥2～3个月的时间内即可完全降解,并生成二氧化碳和水,不污染环境,被认为是21世纪最有前途的生物降解材料。
Polylactide-acid (PLA) is an important derivative of lactic acid. Its main raw material is starch, which is produced by continuous lactic acid fermentation and continuous waste solvent polymerization of lactic acid. It has good physical and mechanical properties and Processing performance, more importantly, its good biodegradability, which can be completely degraded within 2 to 3 months of compost and generate carbon dioxide and water without contaminating the environment, is considered as the most promising biodegradation in the 21st century material.