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Depolymerization and Re/Upcycling of Biodegradable PLA Plastics
YingChao Li1, Shuai Wang1, Song Qian1
1College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China.
ACS Omega
|April 1, 2024
Summary
Polylactic acid (PLA) recycling faces challenges. This review explores chemical depolymerization and upcycling methods to improve PLA waste management and achieve closed-loop recycling.
Area of Science:
- Materials Science
- Environmental Science
- Chemical Engineering
Background:
- Escalating plastic waste necessitates sustainable alternatives like biodegradable plastics.
- Polylactic acid (PLA) is a leading biodegradable plastic but faces adoption barriers.
- Challenges include high cost, low recycling rates, and incomplete degradation of PLA.
Purpose of the Study:
- To review current Polylactic acid (PLA) recycling methods, focusing on chemical re/upcycling.
- To highlight recent advancements and technical challenges in chemical depolymerization of PLA.
- To discuss future prospects for closed-loop recycling and upcycling of PLA waste.
Main Methods:
- Comprehensive literature review of Polylactic acid (PLA) recycling strategies.
- Analysis of chemical depolymerization techniques for PLA waste.
- Evaluation of re/upcycling pathways and their associated challenges.
Main Results:
- Chemical re/upcycling offers significant advantages for Polylactic acid (PLA) waste management.
- Diverse chemical depolymerization methods show promise but face technical hurdles.
- Current methods require further development to achieve efficient and scalable PLA recycling.
Conclusions:
- Addressing Polylactic acid (PLA) recycling challenges is critical for environmental sustainability.
- Advancements in chemical depolymerization are key to enabling closed-loop recycling and upcycling.
- Further research is needed to overcome impediments and realize the full potential of PLA recycling.
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