polymers are also called as biopolymers.[5] Main bioplolymers are polysaccharide-based materials, studies have also been conducted on addition or blends of protein-based materials into polymers. Polyethylene (PE) polypropylene (PP) is non-degradable plastics and hydrophobic due to its hydrocarbon structure. Therefore, it is naturally incompatible with the hydrophilic starch and soya powder. As such, various compatiblizers have been used to improve the interfacial adhesion between PE and polysaccharides or protein based natural polymer[4].
Starch-based bioplastics can be manufactured from either raw or modified starch (e.g. thermoplastic starch or TPS) or from the fermentation of starch-derived sugars (e.g. polylactic acid or PLA). Common starch sources include maize, wheat, potatoes and cassava. Starch is the most attractive candidate of the renewable resources because of its low lost, availability throughout the year and potential for mass production from renewable resources The process of addition of some hydrophilic molecule with inert plastics is backbone is called grafting. Grafting also enhance the biodegradability of Polymers.
Cellulose based Bioplastics are prepared by the chemical modifications in plant cellulose like wood pulp hemp and cotton .these materials are mainly contains cellulose
acetate(CA).Plant proteins(zein) and by- products of paper industry (lignin ) a