Open AccessSynthesis of biodegradable plastic from corn starch and corn husk filler with addition of glycerol as plasticizer and variation of chitosan composition
Author(s) -
R. Azsarinka,
Dadan Ridwan Saleh,
Emmidia Djonaedi
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/902/1/012037
Subject(s) - husk , bioplastic , ultimate tensile strength , plasticizer , starch , materials science , chitosan , filler (materials) , cellulose , glycerol , composite material , extrusion , food science , chemistry , botany , organic chemistry , waste management , engineering , biology
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.