| abstract |
Biodegradable polymeric composition and method for producing a biodegradable polymeric composition, comprising poly(hydroxybutyrate) or copolymers thereof, a plasticizer obtained from a renewable source, a nucleant additive, a flow aid additive, and a thermal stabilizer additive. The process of obtention comprises the steps of mixing to a load of PHB or PHBV in powder, from about 2% to 30% of a plasticizer based on vegetable oils of natural origin and fatty acids of animal and vegetable origin, distilled and hydrogenated; mixing to the biopolymer already containing the plasticizer a thermal stabilizer additive, a nucleant additive; and a flow aid additive; and extruding the composition obtained in the previous step to promote, in the melt state, the incorporation of the additives in the matrix of PHB or PHBV and its subsequent granulation. |