A Study on the Effect of Amylose and Amylopectin Composition of the Starch on the Properties of Starch-based Foam
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Recently, the enormous number of the plastic wastes is considered as the one of the main reasons of the accelerating environmental pollution in our community. Expanded Polystyrene(EPS), one of them, has been used in many applications in packaging industry, such as thermal insulation for fresh food and cushioning materials. However, EPS is difficult to degrade so many researchers have studied on biodegradable alternatives for EPS like starch foam. Starch is biodegradable material and is composed of two components, amylose and amylopectin. The properties of starch foams from different types of starch depend on the composition. In this study, two different types of starch are blended variously. Thermoplastic starch(TPS) was prepared by mixing starch, BVOH and glycerol using the Internal Mixer. Then, the TPS was hot-pressed to prepare a starch foam. The different starch foam samples were characterized to confirm the effect of the amylose and amylopectin composition on the foam properties.