Abstract
Abstract As chitosan and glycerol are mixed, they form a polymer blend that can be processed into edible films, or other plastic-like materials. Chitosan-glycerol mixing generates properties of edible, which means it can break down into non-toxic components over time through natural processes, reducing its environmental impact. In this work, edible film is contained chitosan-glycerol edible films were prepared by evaporation casting from its solution. Edible films were placed on the polyethylene packages and irradiated by Co-60 gamma rays on various radiation doses. After gamma irradiation process, edible films were stored at ambient temperature. To conduct a more in-depth analysis, the edible films undergo characterization using fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC). Additionally, effects of gamma irradiation are shown in shifts of C-O stretching shifted to 1045-1080 cm−1. The N-H and O-H bond became narrow after irradiation of edible films as a higher gamma irradiation dose. Gamma irradiation increased the melting point of chitosan-glycerol mixtures from 173.4 °C to 190.2 °C endothermic peak. The findings revealed that gamma radiation led to enhanced molecular interaction between chitosan and glycerol, thereby influencing the thermal properties of edible films.
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