Mechanical Properties of Biocomposite with Various Composition of CaCO3 and Starch

Calcium carbonate has the potential to be used in development of medical materials, including biomaterials. Biocomposite is composed CaCO3 as matrix material and bioplastic from combination corn starch cassava reinforcement. This study aims determine mechanical properties such tensile strength bending/flexural with varying compositions bioplastic. Characterization biocomposite uses Scanning Electron Microscope observe microstructure composition elements their structure. 4 variations ratio suspension: (Corn Starch + Cassava Starch). Each sample was characterized using specimen code A for 30:70 (w/w) percent B 40:60 percent, C 50:50 D 60:40 percent. Based on results shrinkage measurements flexural specimens, lowest percentage value 15±0.01 The found specimens at 12±0.01 test also showed that had a higher ultimate than other which 0.06±0.03 MPa. Microstructure characterization carried out scanning electron microscopy energy-dispersive X-ray spectroscopy, revealed presence Oxygen approximately 48.39 mass, Carbon 30.27 Nitrogen 11.77 9.57 being detected form Carbonate (CaCO3).