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<p>Most commercial plastics cannot easily degrade, which raises a number of sustainability issues. To address the current problem of plastic pollution, the research and development of easily degradable and recyclable polymers has become an attractive subject. Herein, a new monomer of thiosalicylic methyl glycolide (TSMG) was synthesized using one-pot method and high molecular weight poly(thiosalicylic methyl glycolide) (PTSMG, <i>M</i><sub>n</sub> up to 300 kDa) can be obtained <i>via</i> the ring-opening polymerization (ROP) of TSMG. PTSMG exhibits good closed-loop recyclability and hydrolytic degradability, where PTSMG can generate pristine monomers through sublimation thermal depolymerization conditions due to the presence of thiophenol ester bond in the polymer chains, and can be degraded rapidly in aqueous solution, which provides a potential solution to the current plastic pollution problem.</p>

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Readily Degradable and Recyclable High Molecular Weight Thiosalicylic Acid-based Copolyesters

  • 期刊论文

  • 发表日期：

    2025年1月25日

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  • Ge Yao,
  • Fang-Ping Ren,
  • Fei Chen,
  • Lu-Ya Cao,
  • Ji Xian,
  • Xiao-Bo Pan,
  • Hong-Zhang Cao,
  • Jin-Cai Wu

摘要

Most commercial plastics cannot easily degrade, which raises a number of sustainability issues. To address the current problem of plastic pollution, the research and development of easily degradable and recyclable polymers has become an attractive subject. Herein, a new monomer of thiosalicylic methyl glycolide (TSMG) was synthesized using one-pot method and high molecular weight poly(thiosalicylic methyl glycolide) (PTSMG, Mn up to 300 kDa) can be obtained via the ring-opening polymerization (ROP) of TSMG. PTSMG exhibits good closed-loop recyclability and hydrolytic degradability, where PTSMG can generate pristine monomers through sublimation thermal depolymerization conditions due to the presence of thiophenol ester bond in the polymer chains, and can be degraded rapidly in aqueous solution, which provides a potential solution to the current plastic pollution problem.