Abstract: The invention comprises a method of preparing moldable biodegradable composites containing a diamine cross-linked cellulose alkyl ester. The novel composite can be compression molded to form biodegradable composite (materials)s in the form of useful articles such as cups, planters and the like.

Abstract: A method for producing biodegradable plastic from natural materials containing polysaccharides by treating the polysaccharide-containing materials with a basic aqueous solution, subsequently treating the mixture with a modifying material that converts pendant hydroxyl groups at any carbon atom of the anhydroglucose units of the saccharide to create polysaccharide carboxylate, and then reacting the product with proteins to produce a biodegradable copolymer with electrostatic chemical bonds between protein and polysaccharide carboxylate molecules. The process provides relatively inexpensive methods for preparing biodegradable plastics that are useful for manufacturing various articles.

Abstract: A method for producing biodegradable plastic from natural materials containing polysaccharides by treating the polysaccharide-containing materials with a basic aqueous solution, subsequently treating the mixture with a modifying material that converts pendant hydroxyl groups at any carbon atom of the anhydroglucose units of the saccharide to create polysaccharide carboxylate, and then reacting the product with proteins to produce a biodegradable copolymer with electrostatic chemical bonds between protein and polysaccharide carboxylate molecules. The process provides relatively inexpensive methods for preparing biodegradable plastics that are useful for manufacturing various articles.

Abstract: A method for producing biodegradable plastic from natural materials containing polysaccharides and oligosaccharides by treating the polysaccharide-containing or oligosaccharide-containing materials with a basic aqueous solution, subsequently treating the mixture with a modifying material to create an anionic product, and then contacting the anionic product with proteins to produce the biodegradable plastic material. The process provides relatively inexpensive methods for preparing biodegradable plastics that are useful for manufacturing various articles and also to provide an environmental solution that will reduce the amount of natural wastes that could be practically utilized for the benefit of mankind.