Résumé
This paper deals with gas transport properties of starch based films. Oxygen permeability of plasticised starch, octanoated starch, starch-EVOH blend, and PE-starch multilayer was first studied. The best gas barrier properties of starch based films are generally obtained for low water and plasticiser contents. It was then shown that the interesting low permeability of these systems is due to the low solubility of gases. These results broaden the scope of starch gas transport properties, which are generally discussed in terms of mobility (i.e. gas diffusivity)