• Closed-Loop Chemical Recycling of Waste PLA via Hydrolysis-Assisted Depolymerization and Solid-State Polymerization
  • Ju-Hong Lee, Won-Bin Lim, Jae-Ryong Lee, Jin-Gyu Min, Keun-Ho Lee, Ji-Won Lee, Ji-Hong Bae*,† , and PilHo Huh

  • Department of Polymer Science and Engineering, Pusan National University, Busan 46241, Korea
    *Research Institute for Drug Development, Pusan National University, Busan 46241, Korea

  • 가수분해 기반 해중합 및 고상중합을 통한 폐 PLA의 폐루프 화학적 재활용
  • 이주홍 · 임원빈 · 이재룡 · 민진규 · 이근호 · 이지원 · 배지홍*,† · 허필호

  • 부산대학교 고분자공학과, *부산대학교 신약개발연구소

  • Reproduction, stored in a retrieval system, or transmitted in any form of any part of this publication is permitted only by written permission from the Polymer Society of Korea.

References
  • 1. Geyer, R.; Jambeck, J. R.; Law, K. L. Production, Use, and Fate of All Plastics Ever Made. Sci. Adv. 2017, 3, e1700782.
  •  
  • 2. Rhodes, C. J. Plastic Pollution and Potential Solutions. Sci. Prog. 2018, 101, 207-260.
  •  
  • 3. Payne, J.; McKeown, P.; Jones, M. D. A Circular Economy Approach to Plastic Waste. Polym. Degrad. Stab. 2019, 165, 170-181.
  •  
  • 4. Vollmer, I.; Jenks, M. J. F.; Roelands, M. C. P.; White, R. J.; Harmelen, T.; Wild, P.; Laan, G. P.; Meirer, F.; Keurentjes J. T. F.; Weckhuysen, B. M. Beyond Mechanical Recycling: Giving New Life to Plastic Waste. Angew. Chem. Int. Ed. 2020, 59, 15402-15423.
  •  
  • 5. Rosenboom, J.-G.; Langer, R.; Traverso, G. Bioplastics for a Circular Economy. Nat. Rev. Mater. 2022, 7, 117-137.
  •  
  • 6. Mohanty, A. K.; Vivekanandhan, S.; Pin, J.-M.; Misra, M. Composites from Renewable and Sustainable Resources: Challenges and Innovations. Science 2018, 362, 536-542.
  •  
  • 7. Chen, G.-Q.; Patel, M. K. Plastics Derived from Biological Sources: Present and Future. Chem. Rev. 2012, 112, 2082-2099.
  •  
  • 8. Gironi, F.; Piemonte, V. Bioplastics and Petroleum-based Plastics: Strengths and Weaknesses. Energy Sources Part A 2011, 33, 1949-1959.
  •  
  • 9. Auras, R.; Harte, B.; Selke, S. An Overview of Polylactides as Packaging Materials. Macromol. Biosci. 2004, 4, 835-864.
  •  
  • 10. Castro-Aguirre, E.; Iñiguez-Franco, F.; Samsudin, H.; Fang, X.; Auras, R. Poly(lactic acid)—Mass Production, Processing, Industrial Applications, and End of Life. Adv. Drug Deliv. Rev. 2016, 107, 333-366.
  •  
  • 11. Groot, W.; Borén, T. Polylactide, Developments and Future Directions. Polym. Rev. 2010, 50, 180-213.
  •  
  • 12. Jamshidian, M.; Tehrany, E. A.; Imran, M.; Jacquot, M.; Desobry, S. Poly-Lactic Acid: Production, Applications, Nanocomposites, and Release Studies. Compr. Rev. Food Sci. Food Saf. 2010, 9, 552-571.
  •  
  • 13. Rasal, R. M.; Janorkar, A. V.; Hirt, D. E. Poly(lactic acid) Modifications. Prog. Polym. Sci. 2010, 35, 338-356.
  •  
  • 14. Farah, S.; Anderson, D. G.; Langer, R. Physical and Mechanical Properties of PLA. Adv. Drug Deliv. Rev. 2016, 107, 367-392.
  •  
  • 15. Södergård, A.; Stolt, M. Properties of Lactic Acid Based Polymers. Prog. Polym. Sci. 2002, 27, 1123-1163.
  •  
  • 16. Hottle, T. A.; Bilec, M. M.; Landis, A. E. Biopolymer Production and End-of-life Comparisons Using Life Cycle Assessment. Resour. Conserv. Recycl. 2017, 122, 295-306.
  •  
  • 17. Carrasco, F.; Pagès, P.; Gámez-Pérez, J.; Santana, O. O.; Maspoch, M. L. Processing of Poly(lactic acid): Chemical Structure, Thermal Stability and Mechanical Properties. Polym. Degrad. Stab. 2010, 95, 116-125.
  •  
  • 18. Fukushima, K.; Abbate, C.; Tabuani, D.; Gennari, M.; Camino, G. Biodegradation of Poly(Lactic Acid). Polym. Degrad. Stab. 2009, 94, 1646-1655.
  •  
  • 19. Nishida, H.; Mori, T.; Hoshihara, S.; Fan, Y.; Shirai, Y.; Endo, T. Effect of Tin on Poly(L-lactic acid) Pyrolysis. Polym. Degrad. Stab. 2003, 81, 515-523.
  •  
  • 20. Fan, Y.; Nishida, H.; Shirai, Y.; Tokiwa, Y.; Endo, T. Thermal Degradation Behaviour of Poly(lactic acid). Polym. Degrad. Stab. 2004, 86, 197-208.
  •  
  • 21. Shukla, V.; Sanda, F.; Endo, T. Chemical Recycling of Poly(lactic acid) by Alcoholysis. Polym. Int. 1999, 48, 967-972.
  •  
  • 22. Fukushima, K.; Lecuyer, J. M.; Wei, D. S.; et al. Advanced Chemical Recycling of Poly(lactic acid) to Monomer. J. Polym. Sci. Part A: Polym. Chem. 2011, 49, 1273-1281.
  •  
  • 23. McKeown, P.; Jones, M. D. The Chemical Recycling of PLA: A Review. Sustain. Chem. 2020, 1, 1-22.
  •  
  • 24. Inkinen, S.; Hakkarainen, M.; Albertsson, A.-C.; Södergård, A. From Lactic Acid to PLA. Biomacromolecules 2011, 12, 523-532.
  •  
  • 25. Jehanno, C.; Demarteau, J.; Mantione, D.; Arno, M. C.; Ruiperez, F.; Hendrick, J. L.; Dove, A. P.; Sardon, H. Chemically Recyclable Polymers. Polym. Chem. 2020, 11, 4831-4841.
  •  
  • 26. Zhang, Y.; Cui, L.; Xu, H.; Feng, X.; Wang, Y. Efficient Depolymerization of PLA to Lactide Catalyzed by Ionic Liquids. Green Chem. 2019, 21, 3897-3909.
  •  
  • 27. Hu, L.; Pan, H.; Zhou, Y.; Zhang, M. Catalytic Depolymerization of PLA Using Supercritical Alcohols. Green Chem. 2018, 20, 2890-2898.
  •  
  • 28. Fukushima, K.; Wu, M.-H.; Bocchini, S.; Rasyida, A.; Yang, M. C. Recycling Poly(lactic acid) for Sustainable Polymer Science. J. Polym. Environ. 2013, 21, 738-749.
  •  
  • 29. Payne, J.; McKeown, P.; Jones, M. D. A Circular Economy Approach to Plastic Waste. Polym. Degrad. Stab. 2019, 165, 170-181.
  •  
  • 30. Jehanno, C.; Sardon, H.; Dove, A. P. Chemical Recycling of Polymers. Polym. Chem. 2020, 11, 4831-4841.
  •  
  • 31. Noda, M. Purification of Lactide by Distillation with a Falling Film Evaporator. Sep. Purif. Technol. 2019, 215, 32-39.
  •  
  • 32. Cheng, X.; Li, S.; Xu, L.; Feng, C.; Liu, B.; Guo, H.; Chai, Y.; Li, X.; Wang, Z. Research Progress on One-step Green and Efficient Production of Lactide from Lactic Acid. Surf. Interfaces. 2024, 46, 103934.
  •  
  • 33. Kim, K. W.; Lee, S. Y. Purification of Lactide Using Solvent Crystallization. Korean J. Chem. Eng. 2004, 21, 745-750.
  •  
  • 34. Hyon, S. H.; Jamshidi, K.; Ikada, Y. Synthesis of Polylactides with Different Molecular Weights. Biomaterials 1997, 18, 1503-1508.
  •  
  • 35. Moon, S.-I.; Lee, C.-W.; Taniguchi, I.; Miyamoto, M.; Kimura, Y. Melt/solid-state Polycondensation of L-lactic Acid. Polymer 2001, 42, 5059-5062.
  •  
  • 36. Vouyiouka, S.; Theodoulou, P.; Symeonidou, A.; Papaspyrides, C. D.; Pfaendner, R. Solid State Polymerization of Poly(lactic acid): Some Fundamental Parameters. Polym. Degrad. Stab. 2013, 98, 2473-2481.
  •  
  • 37. Shinno, K.; Miyamoto, M.; Kimura, Y. Solid-state Postpolymerization of Poly(L-lactide). Macromolecules 1997, 30, 6438-6444.
  •  
  • 38. Agrawal, P.; Varma, I. Characterization of PLA by SEC. Polym. Test. 2010, 29, 375-380.
  •  
  • 39. Espartero, J. L.; Rashkov, I.; Li, S. M.; Manolova, N.; Vert, M. NMR Analysis of Low Molecular Weight PLA. Macromolecules 1996, 29, 3535-3539.
  •  
  • 40. Piemonte, V.; Gironi, F. Environmental Assessment of Biodegradable Polymers. J. Polym. Environ. 2013, 21, 640-646.
  •  
  • 41. Rydz, J.; Musioł, M.; Zawidlak-Wegrzyńska, B.; Sikorska, W. Present and Future of Biodegradable Polymers. Polymers 2021, 13, 1823.
  •  
  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2024 Impact Factor : 0.6
  • Indexed in SCIE

This Article

  • 2026; 50(3): 493-504

    Published online May 25, 2026

  • 10.7317/pk.2026.50.3.493
  • Received on Feb 23, 2026
  • Revised on Feb 24, 2026
  • Accepted on Feb 25, 2026

Correspondence to

  • Ji-Hong Bae*, PilHo Huh
  • Department of Polymer Science and Engineering, Pusan National University, Busan 46241, Korea
    *Research Institute for Drug Development, Pusan National University, Busan 46241, Korea

  • E-mail: jhbae@pusan.ac.kr, pilho.huh@pusan.ac.kr