M. Lubis, M.H.S. Ginting, T. Kartika, A. Tesanika, Winny, G.E. Ayu, M.B. Harahap
Bioplastics are plastics that can be used just like conventional plastics, but will disintegrate by the activity of microorganisms into water and carbon dioxide. Starch is a natural polymer material that can be used for bioplastic production. The addition of reinforcing particles has been shown to improve the mechanical properties of bioplastics. The aim of this research is to know the potency of mango seed and microparticles of ZnO and clay as filler and glycerol concentration on tensile strength and elongation at break, functional group (FTIR) and surface morphology (SEM). In this study used mango seed starch size of 5 grams, with variation of ZnO mass of 0; 1; 3; and 6% wt, with variation of clay filler mass of 0; 3; 6 and 9 wt%, while mass of glycerol with a variation of 0; 20; 25; 30; and 35% wt. The FTIR analysis shows that no new functional groups are formed. From the analysis of mango starch content obtained 62.82%, 44.0% amilopectin content, amylose content 14.82%, and water content 12.65%. In this study obtained bioplastics with the best conditions on the use of 3% ZnO, 6% clay and 25% glycerol, with a tensile strength of 5,657MPa, percent elongation at breakup 43.431%. © 2006-2020 Asian Research Publishing Network (ARPN).
Department of Chemical Engineering, Faculty of Engineering, Universitas Sumatera Utara, Almamater Street, Padang Bulan, Medan Baru, Sumatera Utara, Indonesia; Department of Physics, Universitas Negeri Medan, Medan, Indonesia
