Biodegradable mouldings

Details Biodegradable mouldings Biodegradable mouldings

C - Chemistry, Metallurgy

08

B

C08B 30/10 (2006.01) C08J 3/18 (2006.01) C08J 5/04 (2006.01) C08K 3/22 (2006.01) C08L 3/00 (2006.01) C08L 67/04 (2006.01) C08L 101/16 (2006.01)

Patent

CA 2313516

A process is described for the production of mouldings based on biological material, wherein potato skins, optionally in the presence of a plasticiser such as glycerol or urea and lecithin and of a water- resistant biodegradable polymer such as polylactic acid, is subjected to a thermomechanical treatment such as extrusion and then shaped. The mouldings have good mechanical properties and a good biodegradability.

L'invention concerne un procédé de production d'objets moulés à base de matières biologiques, le procédé consistant à soumettre des pelures de pommes de terre à un traitement thermomécanique, tel que l'extrusion, puis à les modeler, éventuellement en présence d'un plastifiant tel que du glycérol ou de l'urée et de la lécithine et d'un polymère biodégradable résistant à l'eau tel que de l'acide polylactique. Les objets moulés obtenus présentent de bonnes propriétés mécaniques et une bonne biodégradabilité.

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