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Sustaining a Biodegradable Environment through the Use of Polylactic Acid and Compost

CSEF · 2019 Chemistry

Leslie A. Almaraz, Aliza D. Arya, Mckayla M. Vargas · East College Prep, Los Angeles, Los Angeles County

Overview

Objectives Creating a sustainable, biodegradable plastic six-pack ring made from polylactic acid with an added plasticizer and an alternate form made of compost. Methods Hydrochloric acid, Lactic acid, a plasticizer called Triethyl Citrate, compost, and multiple beakers. Multiple trials were conducted to see if varying the concentration or time would affect the results. Results Several trials were conducted at various times and concentrations in order to obtain the best type of plastic six-pack ring. Repeated trials were run to determine if an added plasticizer or ingredient affected the results. This difference in trials was used to eliminate methods that were not successful. Conclusions Repeated trials revealed that an added plasticizer created the most pliable plastic. Improvements in time of boiling the solution contributed to a plastic that was less tacky and more pliable. It is concluded that the type of plastic created can be used to create a six-pack ring. A six-pack ring was also created out of compost to propose an eco-friendly alternative.

Summary statement

Through a series of trials conducted, it can be concluded that a biodegradable plastic as well as a compost packed cardboard can create a biodegradable six-pack ring.

Help received

Our chemistry teacher guided us when we conducted our experiments and helped us formulate a procedure that produced results. Archer School for girls gave us a research grant and funded our research.

Competition history

  • CSEF 2019 Chemistry · Entry S0601

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