Development of a Bioplastic Film for Food Packaging
Keywords:
Mechanical properties, Bio plastic films, Biodegradable polymer, PlasticizerAbstract
A biodegradable, eco-friendly, non-toxic polymer film was developed from sweet potato (IpomeaBatatas (L) Lam) starch. The extracted starch was sun-dried in an aluminium tray for two days before use. Glycerol at pH 6, was used in the plasticization of the starch in an acidic medium of 0.1M HCl. Neutralisation of the medium was done with a basic solution of 0.1M NaOH. The mixture was boiled to a temperature of 200o C, poured into a mould and then dried for 24 hours at 50o C, in an oven, to develop the bio-plastic film. Test specimens were prepared from the film and conditioned at 23o C ± 2o C for 24 hours to investigate its mechanical properties such as tensile strength, tensile modulus, extension, load and energy at break in accordance with the American Society of Testing of Materials (ASTM D882). A mixture of 18.75 g of starch, 75 ml of water, 2.50 ml of glycerol, 22.50 ml of NaOH with 22.50 ml of HClproduced 20 g of bio-film plastics from the compositions. Therefore, a conversion ratio of approximately 1:1 of starch to plastics was obtained in this work. The effects of glycerol on the mechanical properties were also evaluated. Results revealed that polymer plastic film with tensile strength of 9.26 MPa, Modulus of 175.25 MPa, glass transition temperature (Tg,) of 9700 C and melting point of 1200oC falls within the range of ASTM plastic films used for packaging purposes. It can be concluded that the bio-film developed can stand as a substitute for the production of shopping bags, sweet wraps, food packaging material for bread, chips, and other fast food.
Downloads
Published
Issue
Section
License
Copyright
With the submission of a manuscript, the corresponding author confirms that the manuscript is not under consideration by another journal. With the acceptance of a manuscript, the Journal reserves the exclusive right of publication and dissemination of the information contained in the article. The veracity of the paper and all the claims therein is solely the opinion of the authors not the journal.