Scholarlink

<p>Polymers that exhibit both biodegradability and chemical recyclability offer a promising solution to environmental pollution and resource scarcity. Poly(glycolic acid) (PGA) is a promising chemically recyclable polymer, characterized by its seawater degradability and high mechanical strength. In this study, aliphatic polycarbonates were synthesized through melt polycondensation and subsequently copolymerized with glycolide (GL) to produce chemically recyclable PGA based triblock copolymers with well-defined structures. The properties of these copolymers, including their thermal properties, crystallization behavior, and mechanical performance, can be effectively adjusted by modifying the structure and content of the middle block. Furthermore, an in-depth investigation reveals that the pyrolysis process involves ester exchange, radical, and back-biting reactions. In addition, the high-efficiency “Monomer↔Copolymer” chemical recycling loop has been established, achieving a remarkable yield exceeding 88% along with a purity greater than 99%.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Synthesis of Chemically Recyclable Poly(glycolic acid)-based Triblock Copolymers with Adjustable Performance

  • 期刊论文

  • 发表日期：

    2025年11月19日

查看全文
  • Qi-Ying Zhong,
  • Xue-Ping Ou-Yang,
  • Fang Li,
  • Si-Chong Chen,
  • Gang Wu,
  • Yu-Zhong Wang

摘要

Polymers that exhibit both biodegradability and chemical recyclability offer a promising solution to environmental pollution and resource scarcity. Poly(glycolic acid) (PGA) is a promising chemically recyclable polymer, characterized by its seawater degradability and high mechanical strength. In this study, aliphatic polycarbonates were synthesized through melt polycondensation and subsequently copolymerized with glycolide (GL) to produce chemically recyclable PGA based triblock copolymers with well-defined structures. The properties of these copolymers, including their thermal properties, crystallization behavior, and mechanical performance, can be effectively adjusted by modifying the structure and content of the middle block. Furthermore, an in-depth investigation reveals that the pyrolysis process involves ester exchange, radical, and back-biting reactions. In addition, the high-efficiency “Monomer↔Copolymer” chemical recycling loop has been established, achieving a remarkable yield exceeding 88% along with a purity greater than 99%.