PRODUCTION AND CHARACTERIZATION OF RICE STARCH AND CORN STARCH BASED BIODEGRADABLE BIOPLASTIC USING VARIOUS PLASTICIZERS AND NATURAL REINFORCING FILLERS

Abstract

The present study focuses on testing the potential of starch from two different sources: corn and rice, to produce bioplastics, and the impact of natural agricultural waste materials (eggshells and rice hulls) as fillers. Bioplastic samples with different starches, plasticizers and amounts of fillers, in varying combinations, were prepared to determine the feasibility of the produced bioplastics. The physico-chemical properties of the bioplastics, such as moisture content, water absorption, water and alcohol solubility, biodegradability, tensile strength and Young’s modulus, were investigated. FT-IR analysis was also performed. The RTV silicone coating of the samples was tested to induce hydrophobic properties to water-soluble bioplastics. This study demonstrated that the utilization of starches from different sources, various types of plasticizers, as well as filler types and amounts, can have a significant impact on the physico-chemical properties of the bioplastics. Moreover, the bioplastics produced are safe for the environment and biodegradable, so starch-based bioplastics can be a promising environmentally friendly alternative to harmful petroleum-based plastics.