Biologically degradable film and method of preparing same

Details Biologically degradable film and method of preparing same Biologically degradable film and method of preparing same

C - Chemistry, Metallurgy

12

P

195/138, 195/59

C12P 1/00 (2006.01) A01G 13/02 (2006.01) C08J 5/18 (2006.01) C08L 23/04 (2006.01) C08L 101/00 (2006.01)

Patent

CA 2027058

ABSTRACT OF THE DISCLOSURE A biologically degradable film is prepared consisting of a synthetic polymer and a biologically degradable polymer. The biologically degradable polymer is divided into small particles in an aqueous suspension by means of enzymes that split and release small molecules from the surface of the biopolymer particles. After achieving desired particle size, an emulsion is formed with vegetable oil and the particles coated with enzyme protein become coated with vegetable oil, which at the same time interrupts the degradation of the biopolymer particles by the enzyme. The coated particles with the oil are separated from the suspension to remove small molecules after which the particles are re-dried and then pulverized. The final film is prepared in a film extruder in which the biopolymer is mixed with the synthetic polymer and possibly other additives that are generally used in forming polymer films.

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