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<p>The development of bio-based, high-performance, and degradable plastics realized the recycling of resources and reduced environmental pollution. In this study, a supramolecular plastic (ESO-PCL) was synthesized via dynamic boroxine crosslinking between epoxidized soybean oil (ESO) and polycaprolactone (PCL). The ESO-PCL plastic exhibited a tensile strength of 30.9&#xa0;MPa and an elongation at break exceeding 132%. Due to the reversibility of boroxines, the plastic owned self-healing properties by hot pressing. Moreover, the plastic could be recycled multiple times by either solvent or hot pressing. Additionally, owing to favorable biodegradability of ESO and PCL, the plastic could degradable in soil and bacterial solution. Meanwhile, the cell viability test proved that the ESO-PCL plastic exhibited satisfactory biocompatibility, which hold great potential for applications in packaging and biomedical fields.</p>

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Dynamic Crosslinking of Epoxidized Soybean Oil and Polycaprolactone to Prepare Self-Healing, Recyclable, and Degradable Supramolecular Plastics

  • 期刊论文

  • 发表日期：

    2026年5月9日

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  • Yue Ding,
  • Congcong Luo,
  • Shuai Liu,
  • Shifan Wang,
  • Dan Huang,
  • Junhui Ji

摘要

The development of bio-based, high-performance, and degradable plastics realized the recycling of resources and reduced environmental pollution. In this study, a supramolecular plastic (ESO-PCL) was synthesized via dynamic boroxine crosslinking between epoxidized soybean oil (ESO) and polycaprolactone (PCL). The ESO-PCL plastic exhibited a tensile strength of 30.9 MPa and an elongation at break exceeding 132%. Due to the reversibility of boroxines, the plastic owned self-healing properties by hot pressing. Moreover, the plastic could be recycled multiple times by either solvent or hot pressing. Additionally, owing to favorable biodegradability of ESO and PCL, the plastic could degradable in soil and bacterial solution. Meanwhile, the cell viability test proved that the ESO-PCL plastic exhibited satisfactory biocompatibility, which hold great potential for applications in packaging and biomedical fields.