China Plastics ›› 2025, Vol. 39 ›› Issue (12): 13-19.DOI: 10.19491/j.issn.1001-9278.2025.12.003

• Materials and Properties • Previous Articles     Next Articles

Research progress in catalytic systems for melt polycondensation of poly(lactic acid) biodegradable materials

LI Shunmei1, ZHANG Dong2, XU Leyao1, JI rongrong1, DONG Shixing1, ZHOU Ling1, ZHAO Xipo1()   

  1. 1.School of Materials and Chemical Engineering,Hubei University of Technology,Wuhan 430068,China
    2.Hubei Firsta Material Science and Technology Group Co,Ltd,Xiaogan 432500,China
  • Received:2025-03-24 Online:2025-12-26 Published:2025-12-22

Abstract:

This review systematically summarized the catalytic systems used in the melt polycondensation of poly(lactic acid) (PLA). It covers conventional metal⁃based catalysts (e.g., tin and titanium compounds) and low⁃toxicity alternatives (e.g., rare⁃earth compounds and phosphotungstic heteropolyacids), with special emphasis on their catalytic mechanisms and influence on final product properties. The development of binary and multi⁃component composite catalysts was highlighted, as these systems demonstrate remarkable synergistic effects that enhance catalytic activity, reaction rate, and the optical purity and thermal stability of PLA. Particular attention was given to the coordination between composite catalysts and stepwise catalytic processes, offering theoretical and technical pathways for the green and controllable synthesis of high⁃performance PLA. Future research should focus on developing efficient, low⁃toxicity catalysts, optimizing synergistic combinations, refining processing technologies, and elucidating polymerization kinetics to facilitate the production of high⁃molecular⁃weight PLA. These advancements are crucial for expanding the industrial application of PLA as a competitive biodegradable material within circular economy systems.

Key words: poly (lactic acid), melt polycondensation, catalysts

CLC Number: