The Effect of Adding TiO2 Filler on The Physical and Mechanical Properties of Bioplastic Based Potato Starch (Solanum tubersom L.) and Glycerol from Waste Cooking Oil

The manufacture of bioplastic from potato starch (Solanum tuberosum L.) and glycerol from waste cooking oil with the addition of TiO2 has been done by varying the concentration of TiO2. This study aims to study the effect of the addition of TiO2 on the physical and mechanical properties of potato starch and glycerol from leech oil. The research was conducted by making glycerol from waste cooking oil, making bioplastic film with various concentrations of TiO2 (0; 1; 2; 3 and 4%), characterization of bioplastic, which includes physical and mechanical properties. The addition of TiO2 as a bioplastic filler can affect its physical and mechanical properties. The result showed that each addition of 1% TiO2 increased the thickness by 22,966 microns, the tensile strength value by 0.0853 N/mm2, the average Young’s modulus by 0.0599 MPa, and decreased elongation by 5.0987%. The best bioplastic mechanical test results were produced at a starch composition of 2.5 grams and 2% (w/w) of TiO2 particles.