Glossary term


Polylactide or Polylactic Acid (PLA), a biodegradable, thermoplastic, linear aliphatic polyester based on lactic acid, a natural acid, is mainly produced by fermentation of sugar or starch with the help of micro-organisms. Lactic acid comes in two isomer forms, i.e. as laevorotatory D(-)lactic acid and as dextrorotary L(+)lactic acid. Modified PLA types can be produced by the use of the right additives or by certain combinations of L- and D- lactides (stereocomplexing), which then have the required rigidity for use at higher temperatures. [13] [bM 01/09, 01/12]