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<p>Poly(butylene succinate) (PBS) is a promising bio-based biodegradable polymer, but has poor mechanical and thermal properties. Isosorbide, a renewable monomer, is gaining attention for its potential of enhancing these properties. Although the properties of PBS and Poly(isosorbide succinate) (PIS) random polymer were analyzed, the block copolymer remains unexplored. This study first reports the synthesis of PBS/PIS block copolymer. The blend of PLA with block copolymer improved thermal stability, while random copolymer exhibited better mechanical properties. Films containing isosorbide degraded 1.2–3.5 times faster than PLA/PBS and 1.3–3.7 times faster than neat PLA in enzymatic solutions, confirming enhanced enzymatic degradability.</p> Graphical abstract <p></p>

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Effect of poly(butylene-co-isosorbide succinate) block copolyester/random copolyester on biodegradable plastics

  • 期刊论文

  • 发表日期：

    2025年12月16日

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  • V. A. K. Sachini Subhashani,
  • Suwabun Chirachanchai,
  • Sorapat Niyomsin

摘要

Poly(butylene succinate) (PBS) is a promising bio-based biodegradable polymer, but has poor mechanical and thermal properties. Isosorbide, a renewable monomer, is gaining attention for its potential of enhancing these properties. Although the properties of PBS and Poly(isosorbide succinate) (PIS) random polymer were analyzed, the block copolymer remains unexplored. This study first reports the synthesis of PBS/PIS block copolymer. The blend of PLA with block copolymer improved thermal stability, while random copolymer exhibited better mechanical properties. Films containing isosorbide degraded 1.2–3.5 times faster than PLA/PBS and 1.3–3.7 times faster than neat PLA in enzymatic solutions, confirming enhanced enzymatic degradability.

Graphical abstract