Herein, we describe the status of bio-derived plastics as well as the existing and emerging technologies that are available for their post-consumer end-of-life valorization. We first present how bio-derived plastics can be produced from renewable materials such as biomass and CO₂. In the second section, we present an overview of the technologies available for the end-of-life, including pyrolysis and gasification and how they can be leveraged towards a circular economy. We continue the discussion with the presentation of an emerging technology, polyolefin hydrocracking. Finally, the concepts are discussed in light of life cycle analysis that helps to assess the sustainability of manufacture (and recycling) methods.
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http://dx.doi.org/10.2533/chimia.2021.744 | DOI Listing |
Macromol Rapid Commun
December 2024
College of Forestry, Wildlife and Environment, Auburn University, Auburn, AL, 36849, USA.
Polypropylene (PP) and polyethylene (PE) are widely used polymers but significantly contribute to plastic waste. Effective recycling of PP and PE is essential for reducing plastic pollution and enhancing sustainability. Collection of post-consumer PP and PE wastes forming comingled mixtures is routinely done due to the difficulty of sorting.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2025
Department of Engineering Science, University of Oxford, Parks Road, Oxford, OX1 3PJ, UK.
Increasing the diversity of bio-based polymers is needed to address the combined problems of plastic pollution and greenhouse gas emissions. The magnitude of the problems necessitates rapid discovery of new materials; however, identification of appropriate chemistries maybe slow using current iterative methods. Machine learning (ML) methods could significantly expedite new material discovery and property identification.
View Article and Find Full Text PDFMater Horiz
November 2024
The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China.
Chem
October 2024
Department of Chemistry, Colorado State University, Fort Collins, CO 80523-1872, USA.
The development of chemically circular, bio-based polymers is an urgently needed solution to combat the plastic waste crisis. However, the most prominent, commercially implemented bio-based aliphatic polyester, poly(lactic acid) (PLA), is brittle, therefore largely limiting its broad applications. Herein, we introduce a class of aliphatic polyesters produced through the ring-opening polymerization (ROP) of (1,5S)-8,8-dimethyl-3-oxabicyclo[3.
View Article and Find Full Text PDFAdv Sci (Weinh)
September 2024
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry and Chemical Engineering, Donghua University, Shanghai, 201620, China.
Designing and making sustainable plastics is especially urgent to reduce their ecological and environmental impacts. However, it remains challenging to construct plastics with simultaneous high sustainability and outstanding comprehensive performance. Here, a composite strategy of in situ polymerizing a petroleum-based monomer with the presence of an industrialized bio-derived polymer in a quasi-solvent-free system is introduced, affording the plastic with excellent mechanical robustness, impressive thermal and solvent stability, as well as low energy, consumes during production, processing, and recycling.
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