Cited by 294biodegradable polymer synthesis and propertiesPolymer crystallization and propertiesWaste Management and Recycling

The Chemical Recycling of PLA: A Review

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McKeown, Paul, Jones, Matthew D.·2020·Sustainable Chemistry

Abstract

Plastics are an indispensable material with numerous benefits and advantages compared to traditional materials, such as glass and paper. However, their widespread use has caused significant environmental pollution and most plastics are currently nonrenewable. Biobased polymers represent an important step for tackling these issues, however, the end-of-life disposal of such materials needs to be critically considered to allow for a transition to a circular economy for plastics. Poly(lactic acid) (PLA) is an important example of a biobased polymer, which is also biodegradable. However, industrial composting of PLA affords water and carbon dioxide only and in the natural environment, PLA has a slow biodegradation rate. Therefore, recycling processes are important for PLA, particularly chemical recycling, which affords monomers and useful platform chemicals, maintaining the usefulness and value of the material. This review covers the different methods of PLA chemical recycling, highlighting recent trends and advances in the area.

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  1. Ho, K.L.G.; Pometto, A.L.; Hinz, P.N.; Gadea-Rivas, A.; Briceño, J.A.; Rojas, A. Field exposure study of polylactic acid (PLA) plastic films in the banana fields of Costa Rica. J. Environ. Polym. Degrad. 1999, 7, 167-172. [CrossRef] · DOI
  2. Siparsky, G.L.; Voorhees, K.J.; Miao, F. Hydrolysis of polylactic acid (PLA) and polycaprolactone (PCL) in aqueous acetonitrile solutions: Autocatalysis. J. Environ. Polym. Degrad. 1998, 6, 31-41. [CrossRef] · DOI

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Authors
McKeown, P., & Jones, M. D.
Affiliations
University of Bath (GB)
Corresponding author
  • McKeown, Paul
  • Jones, Matthew D.
Venue
Sustainable Chemistry
Publisher
MDPI AG
Published
2020-05-02
Volume
1
Issue
1
Pages
1-22
ISSN
2673-4079 (ISSN-L)
OpenAlex
W3021978864
Cited by
294
References
150
Citations by year
2026: 41 · 2025: 66 · 2024: 49 · 2023: 67 · 2022: 49 · 2021: 19 · 2020: 3
FWCI
2.31
Type
journal article
Language
en
Open access
Locations
Sustainable Chemistry (publishedVersion, cc-by)
Funders
Engineering and Physical Sciences Research Council (EP/P016405/1)
Topics
  • Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
  • Physical Sciences › Environmental Science › Waste Management and Disposal › Waste Management and Recycling
Keywords
polylactic acid, chemical recycling, bio-based polymers, biodegradable plastics, monomer recovery, circular economy, plastic waste, end-of-life plastics, composting, biodegradation

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