Life cycle assessment of advanced grade PLA product with novel end-of-life treatment through depolymerization

• DOI: 10.1016/j.scitotenv.2023.167020
• Publication Date: 2023-09-14T01:27:11Z
• Authors: Anna Schwarz; Špela Ferjan; Josse Kunst
• Keywords: Depolymerization; Polylactic Acid; Bioplastic

Using biobased plastics has the potential to avoid fossil resource depletion and CO2 emissions. Polylactic acid (PLA) is a fast-growing bio-based plastic made from fermented sugars. Nowadays, PLA used replace fossil-based polymers in healthcare single-use applications, such as for packaging applications. However, offers much broader application range with targeted use of combination its stereoisomers; PL(L)A PL(D)A. A variety these advanced grades can be multiple purposes durable consumer products furniture. Recycling complex, mixed material currently limited, mechanical recycling limitations grades. depolymerization technology, recycled form high-quality PLA. cradle-to-grave life cycle assessment study was executed evaluate sustainability high-end product (a rug) mixtures grade novel technology. The findings showed 70 % reduction CO2-eq. emissions compared conventionally designed rug. an increase indicated following environmental impact categories: land use, eutrophication, toxicity. Sensitivity analyses collection rates showcased that design are key obtaining more sustainable products. Additionally, scenario analysis supported technology low Based on results LCA additional analysis, encouraged lasting products, furniture, perspective, provided ensure circularity.