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<p>This study investigates the impact of metal-organic framework (MOF-2) nanofillers and epoxy functionalized graphene (EFG) on poly(lactic acid)/poly(butylene adipate-co-terephthalate) (PLA/PBAT) blends. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analyses revealed strong interfacial compatibility and efficient dispersion of the nanofillers, leading to a co-continuous morphology. Rheological measurements showed improved interfacial adhesion and molecular chain entanglement, resulting in a more robust polymer network and a more homogeneous microstructure. Tensile tests revealed significant improvements in mechanical properties, while density measurements showed no significant change, highlighting the compatibility of MOF-2/EFG with the PLA/PBAT blend. Thermal analyses indicated an increase in cold crystallization temperature, suggesting enhanced stability and crystallization of the polymer matrix. Water vapor permeability (WVP) tests showed a substantial reduction in permeability, indicating enhanced barrier properties. Finally, contact angle measurements revealed improved wettability and surface properties due to the hydrophilic nature of MOF-2 and EFG. These results confirm that MOF-2/EFG significantly enhances the morphological, rheological, mechanical, thermal, barrier, and surface properties of PLA/PBAT nanocomposites, making them ideal for applications like packaging.</p> Graphical Abstract <p></p>

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Enhanced Performance of Poly(lactic acid)/Poly(butylene adipate-co-terephthalate) Blends with Metal–Organic Framework (MOF-2) and Epoxy Functionalized Graphene (EFG): A Comprehensive Study of Morphology, Rheological, Thermal, Mechanical, and Barrier Properties

  • 期刊论文

  • 发表日期：

    2025年7月9日

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  • Fatima Benbelaid,
  • Boubkeur Seddik Bouakaz,
  • Antoine Kervoelen,
  • Bénédicte Balcon,
  • Khadidja Arabeche,
  • Gilles Ausias,
  • Abderrahmane Habi

摘要

This study investigates the impact of metal-organic framework (MOF-2) nanofillers and epoxy functionalized graphene (EFG) on poly(lactic acid)/poly(butylene adipate-co-terephthalate) (PLA/PBAT) blends. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analyses revealed strong interfacial compatibility and efficient dispersion of the nanofillers, leading to a co-continuous morphology. Rheological measurements showed improved interfacial adhesion and molecular chain entanglement, resulting in a more robust polymer network and a more homogeneous microstructure. Tensile tests revealed significant improvements in mechanical properties, while density measurements showed no significant change, highlighting the compatibility of MOF-2/EFG with the PLA/PBAT blend. Thermal analyses indicated an increase in cold crystallization temperature, suggesting enhanced stability and crystallization of the polymer matrix. Water vapor permeability (WVP) tests showed a substantial reduction in permeability, indicating enhanced barrier properties. Finally, contact angle measurements revealed improved wettability and surface properties due to the hydrophilic nature of MOF-2 and EFG. These results confirm that MOF-2/EFG significantly enhances the morphological, rheological, mechanical, thermal, barrier, and surface properties of PLA/PBAT nanocomposites, making them ideal for applications like packaging.

Graphical Abstract