Polyglycolic acid or Polyglycolide is a biodegradableBiodegradation is the breakdown of organic matter by microorganisms, such as bacteria and fungi., thermoplastic polymerA polymer is a substance or material consisting of very large molecules, or macromolecules, composed of many repeating subunits. and the simplest linear, aliphatic polyester. Besides is use in the biomedical field, PGA has been introduced as a barrier resin. [bM 03/09]