Mechanical Properties and Biodegradability of Acid-soluble Chitosan-Starch Based Film
Abstract: Chitosan-starch
blend film showed desirable elongation and oxygen transmission rate (OTR)
values and demonstrated rapid degradation in soil burial treatment. The
incorporation of higher glycerol concentration lowered tensile strength but increased
the amount of transmittable water vapour. The biodegradability of
chitosan-starch based film was tested using soil burial test. Chitosan-starch
blend films were able to degrade naturally at slightly similar period, ranging
from 72–87 days. The addition of glycerol was likely contributed to the high
Water Vapour Transmission Rate (WVTR) value which faster the biodegradability
of the film in soil. Among different type of acid solutions, lactic acid is
less preferable solution to dissolve chitosan as it produced film with poor
mechanical properties compared to acetic and formic acid. Based on its
mechanical limitation, the film can be used as a coating based film for certain
type of fish product, especially product with high lipid content.
Keywords: biodegradability,
mechanical properties, oxygen transmission rate, water vapour transmission rate
Author: Novalia Rachmawati,
Radestya Triwibowo, Roni Widianto
Journal Code: jpperikanangg150037
