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  1. Home
  3. Isoselective Ring-opening Polymerization To Access High-performance Poly(α-substituted-β-propiolactone)s.
  1. Home
  3. Isoselective Ring-opening Polymerization To Access High-performance Poly(α-substituted-β-propiolactone)s.

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Isoselective Ring-Opening Polymerization to Access High-Performance Poly(α-Substituted-β-Propiolactone)s.

Jun-Ming Liu1, Qing Cao1, Qi-Ye Fang1

  • 1National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Advanced Polymer Materials, College of Chemistry, Sichuan University, 29 Wangjiang Rd, Chengdu 610064, P. R. China.

Journal of the American Chemical Society
|March 19, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

Researchers developed a new method for synthesizing highly isotactic poly(α-substituted-β-propiolactone) (P(αRPL)) plastics. This breakthrough offers a sustainable alternative to conventional plastics with tunable properties and closed-loop recycling capabilities.

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Area of Science:

  • Polymer Chemistry
  • Materials Science
  • Sustainable Chemistry

Background:

  • Poly(α-substituted-β-propiolactone) (P(αRPL)) shows promise as a biodegradable plastic, similar to natural polyhydroxyalkanoates (PHAs).
  • The synthesis of isotactic P(αRPL) via ring-opening polymerization has been a significant challenge.

Purpose of the Study:

  • To explore the chemical synthesis of highly isotactic P(αRPL) using a novel catalytic system.
  • To investigate the properties and recycling potential of the synthesized isotactic P(αRPL).

Main Methods:

  • Utilized a robust salalen yttrium complex (Y2) as a catalyst for ring-opening polymerization.
  • Characterized the synthesized P(αRPL) for tacticity, thermal properties (e.g., melting transition temperature), and mechanical properties.
  • Evaluated the depolymerization behavior of P(αRPL) to assess recyclability.

    • Main Results:

    • Successfully synthesized highly isotactic P(αRPL) with a probability of monomeric dyad placement (Pm) greater than 0.95.
    • Demonstrated tacticity-dependent thermal and mechanical properties, with highly isotactic P(BPL) reaching a melting transition temperature of 165 °C.
    • Showcased P(αRPL) as strong, ductile materials comparable to high-density polyolefins and capable of clean depolymerization for closed-loop recycling.

    Conclusions:

    • Established a powerful synthetic platform for accessing isotactic P(αRPL) using a salalen yttrium catalyst.
    • Highlighted the potential of P(αRPL) as a sustainable plastic alternative with tunable properties and efficient recyclability.
    • Paved the way for the discovery of novel sustainable plastics based on P(αRPL) structures.