MECHANICAL PROPERTIES OF BIOPLASTICS JANENG STARCH (Dioscorea hispida) FILM WITH GLYCEROL AND ZINC OXIDE AS REINFORCEMENT
Chairul Amni, İsmet İsmet, Sri Aprilia, Mariana Mariana, Said Ali Akbar
Abstract
The biodegradable plastics have been synthesized from janeng starch with the addition of ZnO and Glycerol as plasticizers. The process has used ZnO with variation of concentration by 1%, 3% 6%, then Glycerol with volume 1 ml, 3 ml, and 6 ml. The utilization of 6% ZnO and 3 ml of glycerol showed the highest tensile strength of 2.8 kgf/cm 2 ; conversely, the highest percent elongation was obtained at 1% ZnO with addition 6 ml glycerol to be 4.5%. The lowest water absorption was captured in the composition of 6% ZnO with the addition of 1 ml of glycerol, which was equal to 2.9%, and the decomposition process occurred for 27 to 36 days.
Topics & Concepts
BioplasticZincGlycerolStarchDioscoreaReinforcementMaterials scienceChemistryFood scienceChemical engineeringComposite materialOrganic chemistryMetallurgyEngineeringWaste managementPathologyMedicineAlternative medicinePolysaccharides Composition and Applications