Poly(lactic acid) or polylactic acid or polylactide (PLA) is a biodegradable thermoplastic aliphatic polyester derived from renewable resources, such as corn starch (in the United States and Canada), tapioca roots, chips or starch (mostly in Asia), or sugarcane (in the rest of the world). In 2010, PLA had the second highest consumption volume of any bioplastic of the world.
The name "polylactic acid" does not comply with IUPAC standard nomenclature, and is potentially ambiguous or confusing, because PLA is not a polyacid (polyelectrolyte), but rather a polyester.
物化属性:
密度：1.276g/cm3
熔点：16.8ºC
沸点：227.6ºC at 760mmHg
闪光点：109.9ºC
颜色：Crystals Yellow to colorless crystals or syrupy 50% liquid