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<p>Furan-based polyesters are attractive biobased alternatives to petroleum-derived materials, but their practical use is often limited by intrinsic brittleness, slow crystallization, and narrow processing tolerance for fiber applications. In this study, a soft-segment engineering strategy was developed by incorporating poly(tetramethylene ether) glycol (PTMEG) into poly(propylene 2,5-furandicarboxylate) (PPF) to construct a tunable segmented copolyester platform that balances rigidity, toughness, and spinnability. Structural characterization confirmed successful copolymer formation, while thermal and viscoelastic analyses revealed that PTMEG effectively enhances chain mobility without sacrificing the inherent thermal robustness of PPF. The resulting copolyesters exhibited composition-dependent regulation of wettability, crystallization behavior, relaxation characteristics, and mechanical response, showing a composition-driven shift in room-temperature tensile behavior from brittle fracture (low elongation) to highly extensible, elastomer-like deformation. Notably, an intermediate PTMEG composition provided the most favorable balance between strength and extensibility, whereas excessive soft-segment loading impaired spinnability and structural integrity during high-speed fiber take-up. These findings establish a practical composition-structure-property framework for designing biobased furan polyester elastomeric materials and guide melt-spun fiber processing windows.</p>

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Soft Segment Engineering of Bio-Based Poly(propylene 2,5-furandicarboxylate) for Enhanced Toughness and Spinnability

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月11日

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  • Hsu-I Mao,
  • Sheng-Yuan Chiu,
  • Shang-Hua Yu,
  • Ke-Ling Tuan,
  • Kuan-Yi Wu,
  • Chin-Yen Wang,
  • Chin-Wen Chen

摘要

Furan-based polyesters are attractive biobased alternatives to petroleum-derived materials, but their practical use is often limited by intrinsic brittleness, slow crystallization, and narrow processing tolerance for fiber applications. In this study, a soft-segment engineering strategy was developed by incorporating poly(tetramethylene ether) glycol (PTMEG) into poly(propylene 2,5-furandicarboxylate) (PPF) to construct a tunable segmented copolyester platform that balances rigidity, toughness, and spinnability. Structural characterization confirmed successful copolymer formation, while thermal and viscoelastic analyses revealed that PTMEG effectively enhances chain mobility without sacrificing the inherent thermal robustness of PPF. The resulting copolyesters exhibited composition-dependent regulation of wettability, crystallization behavior, relaxation characteristics, and mechanical response, showing a composition-driven shift in room-temperature tensile behavior from brittle fracture (low elongation) to highly extensible, elastomer-like deformation. Notably, an intermediate PTMEG composition provided the most favorable balance between strength and extensibility, whereas excessive soft-segment loading impaired spinnability and structural integrity during high-speed fiber take-up. These findings establish a practical composition-structure-property framework for designing biobased furan polyester elastomeric materials and guide melt-spun fiber processing windows.