Methods for the production of biodegradable plastics material from cellulose plant wastes

A method for the production of a biodegradable plastics material obtained from plant waste materials, comprising the steps of:

• a) dissolving the plant waste material in an anhydrous solvent mixture comprising an anhydrous trifluoroacetic acid and a trifluoroacetic anhydride in order to dissolve a cellulose fraction of said material, the waste material being partly dehydrated to the extent that its water content is not suitable to cause hydrolysis of the cellulose fraction,
• b) obtaining a solution containing a non-hydrolized cellulose fraction and
• c) removing said solvent mixture from the solution containing said non-hydrolysed cellulose fraction.