| Abstrakt: |
Biopolymer was synthesized and characterized from yucca flour. To obtain the flour, Yucca was cut into small pieces, grounded, sieved, and placed in the oven. After obtaining the yucca flour, it was analyzed to determine properties as: pH, acidity and residues. For the synthesis of the biopolymer, more than 30 experiments were done, varying the amounts of yucca flour and the substrates as: carboxymethyl cellulose, cellulose, sorbitol, citric acid and polyvinyl alcohol; Glycerin was used as plasticizers following the same methodology: The flour was dissolved in distilled water with the copolymer, the plasticizer was added; it was refluxed and poured into the mold and placed in the oven. The film synthesized with polyvinyl alcohol showed no plasticity, those out of flour with citric acid and sorbitol fractured when removed from the mold, those made from cellulose showed high viscosity. Films synthesized with yucca flour and carboxymethyl cellulose showed good plasticity and peeled off without any problem. Films synthesized with yucca flour and carboxymethyl cellulose were tension tested and showed a displacement of 137.344 mm at a force of 0.030 N. [ABSTRACT FROM AUTHOR] |
