Cellulose, contained in corn husk, is one of natural polymer that can be used as filler for bioplastics. Corn starch flour (maize) as matrix and corn husk powder in different grain size as filler is then synthesized with chitosan and glycerol. The resulting bioplastics is a thin film with muddy-brown color. Alternating the corn husk powder grain size from 150 mesh to 200 mesh modifies the physical characteristics, especially mechanical properties. The most optimal bioplastics were obtained with 200 mesh grain size of corn husk powder and 0.04% chitosan composition with tensile strength of 286.31 N/cm 2, elongation of 10.19%, Young modulus of 28.11 N/cm 2 and tear resistance of 705.61 mN. There are changes in molecular structure of some functional groups as compared to the elements. Bioplastics were degraded 30–35% for 21 days in soil, started moldy after 10 days in open air and endured for one hour in temperature 100 C.