Open AccessMechanical Properties and Biodegradability of Starch-based Biocomposite Films Reinforced with Microcrystalline Cellulose from Rice Embryo
Author(s) -
N Suklaw,
Usarat Ratanakamnuan
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2175/1/012034
Subject(s) - biocomposite , biodegradation , microcrystalline cellulose , starch , materials science , ultimate tensile strength , cellulose , composite material , hydrolysis , chemical engineering , nuclear chemistry , polymer chemistry , chemistry , food science , organic chemistry , engineering , composite number
In this research, glycerol-plasticized cassava starch/San Pa Tong sticky rice embryo plant microcrystalline cellulose (SPT-MCC) biocomposite films were prepared by solvent casting technique. SPT-MCC were extracted from sticky rice embryo plant by alkaline delignification process, bleached with hydrogen peroxide and hydrolysis with sulfuric acid, respectively. Effect of SPT-MCC content (0-60% wt% based on starch content) on thermal properties, mechanical properties and biodegradability of the biocomposite films were studied. Biodegradation of biocomposite films were investigated by soil burial test methods for 8 days. The biodegradability test results were compared with the degradation of three types commercial plastic bags. The result showed that thermal stability of biocomposite films decreased with the increasing of SPT-MCC addition while the tensile strength and Young’s Modulus of biocomposite films increased with the increment of SPT-MCC content. Starch-based biocomposite films reinforced with 10-40% wt% of SPT-MCC completely decomposed within 3 day, while the 50-60% wt% of SPT-MCC biocomposite films entirely degrade within 8 day.