Patent ID: 11919973
Assignee: YILDIZ TEKNIK UNIVERSITESI
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  D | IPC C  D

Claim 0:
1. A method for producing bioplastic granules, comprising the process steps of:
mixing 4 kg of a dry olive pit waste (prina) with a 0.9 M 16 L NaOH solution to obtain a first mixture and transferring the first mixture to a reactor, and increasing a temperature gradually to 150° C., stirring the first mixture by fixing a pressure to 9.5 bars,
cooling the first mixture contained in the reactor to obtain a cooled mixture,
obtaining a solid cellulose by separating the cooled mixture by a filtering method, wherein a hemicellulose structure and a lignin structure are available in a dissolved state in the NaOH solution, and the hemicellulose structure and the lignin structure are obtained from the olive pits and are available in the cooled mixture,
washing the solid cellulose in part with distilled water,
combining the solid cellulose and treating the solid cellulose with 0.52 M 8 L H2SO4 with a gradual heating at 150° C. at 10.5 bars in the reactor to obtain a second mixture,
cooling the second mixture,
separating a cellulosic part and a shredded, dissolved the cellulose part from each other in the second mixture by using a filtering paper after the cooling to obtain a separated liquid component, wherein the cellulosic part is the pellet part in the second mixture and the shredded, dissolved cellulose part is polymerized,
transferring the separated liquid component to glass beakers with a volume of 2 L, adding 4 ml of the glycerin or 6.5 ml of the sorbitol and the antimicrobial agent (oleuropein) to each liquid component of 2 L and placing the each liquid component in the heater,
setting the heater to 300° C. and a mixing speed of 600 Rpm and obtaining a pulp structure as a result of the polymerization reaction of the shredded, dissolved cellulose part after mixing for 2 hours,
leaving the pulp structure to cool at the room temperature to obtain a cooled pulp structure, and
drying the cooled pulp structure in an oven at 65° C. for 24 hours.