DefinePK

Abstract

The effect of modified sugar palm fiber addition on mechanical properties and Fourier Transform Infrared Spectroscopy (FT-IR) analysis of bioplastic from avocado seed starch with plasticizer glycerol were studied. Mechanical properties of bioplastic were determined by tensile strengths, elongation at break, and modulus young. Bioplastic manufacturing process is carried out by solution casting technique. Fiber serves as filler in bioplastic, in this research, the filler that was used was modified sugar palm fiber. Modified sugar palm fiber was soaked in 5% (w/v) NaOH to lose the lignin contents. Variations of avocado seed starch and modified sugar palm fiber composition ratio were 6:4, 7:3 and 8:2 (w/w) and variations of glycerol addition were 0.1; 0.2; 0.3; 0.4 (v/w). From the analysis conducted on the mechanical properties, can be found that the best composition ratio between avocado seed starch and modified sugar palm fiber was 6:4 (w/w), the best variation of glycerol addition was 0.1 (v/w), with a tensile strength 3.46 MPa, elongation at break 5.90%, and modulus young 63.45 MPa. From the result of FT-IR analysis indicated O-H group, C-H group, C=O group, and C-O group on bioplastics.