S w e e t p e a . d e s i g n. Domain Registration, Website Design and Business Web Hosting at Register.com. Polylactic acid. Poly(lactic acid) or polylactide (PLA) is a thermoplastic aliphatic polyester derived from renewable resources, such as corn starch (in the United States), 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 "poly(lactic 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. Corn Plastic to the Rescue. China Pla, China Pla Manufacturers, China Pla Suppliers and Companies on Alibaba.