In this paper experimental results obtained with the exploded wood/tertiary amine oxide system are presented. The use of particular conditions leads to the formation of new biodegradable films. These films may have a natural color from brown to black. The mechanical properties are studied and a comparison with a black commerical synthetic film is made. The structure of the films is made. The structure of the films is studied as well as the role of lignin as an antioxidant.