This study aims to determine the effect of nanocrystalline cellulose and potassium chloride (KCl) bioplastics from avocado seed starch glycerol as plasticizer. In this study, nanocrystal obtained palm fruit fiber was hydrolyzed using sulfuric acid (H2SO4) at a concentration 50%. The used in extraction process. On producing bioplastic, casting method with addition filler 1%, 2%, 3%, 4% (%w), KCl...