Production of Biodegradable Plastic Packaging Film from Cassava Starch

Abstract

-Materials used for food packaging today consists of a variety of petroleum-derived plastic polymer, metals, glass, paper and board, or combinations thereof. Among these packaging materials, plastic is found to be the best because of its long life properties. Thus, its utilization is increasing every day by day. However, plastics cannot be degraded by natural processes in a short period of time; therefore, they are left as plastic waste, causing environmental problems. Methods normally used to destroy other types of waste such as burning and burying are not suitable for plastic destruction. In response to these problems associated with plastic waste, there has been considerable interest in the development and production of biodegradable plastics. In this work, a biodegradable plastic film was produced by blending cassava starch and a synthetic biodegradable polymer (PVA). The film produced was found to have a biodegradability of 41.27% compared to 10.33% and 85.99% for polythene and paper respectively. The film also has a tensile strength of 24.87N/mm 2 compared to 10.86N/mm 2 and 8.29N/mm 2 for polythene and paper. The potential of producing biodegradable packaging plastic film from cassava starch is encouraging and should be further explored especially in a country with high cassava productivity, like Nigeria.