YPIE Scientist: Fathi Ali

Research: Designing a Plant-Based Bioplastic: Exploring the Effect of Polymer Ratios on Mechanical Properties

Awards: 3rd Place award winner in Medicine in Health (2023) Sommers Science Fair

Research Location: Saunders Trades and Technical High School

Abstract:

In an attempt to develop an environmentally friendly bioplastic, a tapioca starch-based bioplastic was prepared using 25g of starch, 150 mL of water, 5 mL of glycerin, and 5 mL of 5% acetic acid. The bioplastic was ground into dust and blended with powdered PLA to form hybrid bioplastic mixtures. Five total samples were prepared, each weighing 3 grams, and molded using aluminum foil as a form. Citric acid (0.15g) was added as a compatibilizer in the hybrid molds. The blends ranged from 100% PLA to 100% starch-based bioplastic, with several ratios in between. All samples were heated in an oven between 350°F and 400°F until melted and solidified. After cooling, each sample was tested for mechanical strength using a digital force gauge. While all blends demonstrated varying levels of durability, the hybrid molds, particularly those containing citric acid, displayed structural qualities that stood out when compared to the starch-based bioplastic alone. These early observations suggest potential for developing sustainable plastics that balance environmental benefits with practical performance.

Presentation Slides

About this Scientist:

Fathi Ali is a senior in the Bio/Chem program at Saunders Trades and Technical High School. He will be attending City College as a Pre-Health major in the fall. After college he plans on enrolling in an M.D/PhD program and becoming a Rheumatologist.