Preparation of bioplastic film from gadung starch (discoreahipida) and chitosan plasticized with glycerol

Abstract

Bioplastic film based on gadung starch (Discoreahispida) and chitosan plasticized by glycerol were prepared through solvent casting method. The aim of the study was to determine the effect of starch and chitosan composition on both mechanical properties and lyophobicity of the films. The results indicated that incorporating the chitosan in the starch matrix induced structural modification due to interaction between hydroxyl functional group and amino group of the starch and chitosan. The films produced in this research exhibit smooth surface, homogeneous and both porosity and cracks were not occurred which was evidenced by Atomic Force Microscopy (AFM) data. The findings also revealed that adding more chitosan in the starch matrix have significantly enhance tensile strength of the film while reduce the extension at break. Films with more chitosan absorbed more water compared to less chitosan film.