2021
DOI: 10.1002/cssc.202100400
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The Chemical Recycling of Polyesters for a Circular Plastics Economy: Challenges and Emerging Opportunities

Abstract: Whilst plastics have played an instrumental role in human development, growing environmental concerns have led to increasing public scrutiny and demands for outright bans. This has stimulated considerable research into renewable alternatives, and more recently, the development of alternative waste management strategies. Herein, the aim was to highlight recent developments in the catalytic chemical recycling of two commercial polyesters, namely poly(lactic acid) (PLA) and poly (ethylene terephthalate) (PET). Th… Show more

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Cited by 228 publications
(252 citation statements)
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“…In addition to mechanical methods, recycling can be performed via chemical depolymerization [111,116]. Chemical recycling has great potential in the circular economy of plastics; it can close the loop by producing starting monomers from the polymers that may be reprocessed to produce high-value-added chemicals [70]. It is estimated that, by 2050, almost 60% of plastic production can be based on recycled products [117].…”
Section: Chemical Depolymerizationmentioning
confidence: 99%
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“…In addition to mechanical methods, recycling can be performed via chemical depolymerization [111,116]. Chemical recycling has great potential in the circular economy of plastics; it can close the loop by producing starting monomers from the polymers that may be reprocessed to produce high-value-added chemicals [70]. It is estimated that, by 2050, almost 60% of plastic production can be based on recycled products [117].…”
Section: Chemical Depolymerizationmentioning
confidence: 99%
“…Methanol is widely used and is effective for the solvolysis of various polymers such as PET, polyamides, and polycarbonates. The majority of post-consumer recovered PET is currently reprocessed by mechanical recycling; however, this process leads to molar mass reduction and a consequent reduction in the physical-mechanical properties of the polymer, which is generally used to produce carpets (72%) [70], along with a small percentage of PET for bottle production [129]. Moreover, the commercial appeal of mechanical recycled PET depends on the price of oil; thus, when oil is available at prices below $65 per barrel, mechanically recycled PET is no longer competitive [70].…”
Section: Methanolysismentioning
confidence: 99%
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“…[3,[8][9][10]. Due to the heterogeneity of these applications and the lack of suitable recollection systems, these PET applications are excluded from mechanical recycling at the moment [11].…”
Section: Introductionmentioning
confidence: 99%