The Effect of Taro Tuber Starch (Colocasia esculenta (L.) schott) Addition to Characteristic of Biodegradable Plastic with PVA Polymer and Calcium Carbonate (CaCO3) Filler

The preparation of biodegradable plastics based on polyvinyl alcohol (PVA)-taro starch as an alternative to synthetic has been conducted. aim this research was identify the effect taro composition production plastic and their characteristics in aquatic environment. solution casting method used produce plastic. PVA dissolved hot distilled water, (0; 0.5; 1.5; 2.5; 3.5 g) another chamber filled with glycerol citric acid. Both solutions were mixed together CaCO3 then added. mixture casted acrylic plates while without a control. Characteristic Biodegradable it’s properties examined by Fourier Transform Infra Red (FTIR), water uptake, moisture absorption test. While biodegrability sample tested river media laboratory. results showed that wave number at 1698-1712 cm-1, indicating cross-linking between occured. Water uptake tests all varieties produced hydrophilic. biodegradation test largest degree decomposition reached PVA-starch g variety which 80.33%. Thus, more plastic, achieved.