| dc.description.abstract | The production of starch based bioplastic from durian seed as polymer matrix with
addition of chitosan as filler and sorbitol as plasticizer were investigated. The aim of
this research to obtain the effect of HCl concentration as chitosan solvent on the
mechanical properties of bioplastics included density, tensile strength, elongation at
break, functional group using FT-IR, surface morphology using SEM, and Water
Absorption. Starch is the raw material for bioplastics which extracted by the durian
seeds, then characterized to determine its chemical composition. The production of
bioplastic method used in this research was casting method. Variation of HCl
concentration used 0,8%, 0.9%v, 1.0%v, 1.1%v, 1.2%v and 1.3%v, while the
variation for bioplastic heating temperature were 70 oC; 72.5 oC; 75 oC; 77.5 oC;
dan 80 oC. Bioplastic were analyzed physical and chemical properties. From the
analysis, best condition of bioplastics obtained at HCl concentration 0.9%v with
temperature 70 oC for tensile strength 10.630 MPa, elongation at break 8,207 %,
density 2,319 gr/cm3
, and water absorption 10,017 %. From the results of FT-IR
analysis indicated O-H group and N-H group on bioplastics due to the addition of
chitosan and sorbitol. The results of mechanical properties were supported by
Scanning Electron Microscopy (SEM) showed the bioplastic with chitosan as filler
and plasticizer sorbitol have the fracture surfaces were smooth, soft and compact. | en_US |
