The objective of this study was to improve the toughness of bio-based brittle poly(ethylene 2,5-furandicarboxylate) (PEF) by melt blending with bio-based polyamide11 (PA11) in the presence of a reactive multifunctional epoxy compatibilizer (Joncryl ADR®-4368). The morphological, thermal, rheological, and mechanical properties of PEF/PA11 blends were investigated. Compared with neat PEF, the toughness of PEF/PA11 blend was not improved in the absence of the reactive compatibilizer due to the poor compatibility between the two polymers. When Joncryl was incorporated into PEF/PA11 blends, the interfacial tension between PEF and PA11 was obviously reduced, reflecting in the fine average particle size and narrow distribution of PA11 dispersed phase as observed by scanning electron microscopy (SEM). The complex viscosities of PEF/PA11 blends with Joncryl were much higher than that of PEF/PA11 blend, which could be ascribed to the formation of graft copolymers through the epoxy groups of Joncryl reacting with the end groups of PEF and PA11 molecular chains. Thus, the compatibility and interfacial adhesion between PEF and PA11 were greatly improved in the presence of Joncryl. The compatibilized PEF/PA11 blend with 1.5 phr Joncryl exhibited significantly improved elongation at break and unnotch impact strength with values of 90.1% and 30.3 kJ/m², respectively, compared with those of 3.6% and 3.8 kJ/m² for neat PEF, respectively. This work provides an effective approach to improve the toughness of PEF which may expand its widespread application in packaging.

这项研究的目的是在反应性多功能环氧增容剂（Joncryl ADR）存在下，通过与生物基聚酰胺11（PA11）熔融共混来提高生物基脆性聚（2,5-呋喃二甲酸乙烯酯）（PEF）的韧性。 ®-4368）。研究了PEF / PA11共混物的形态，热学，流变学和机械性能。与纯PEF相比，由于缺乏两种聚合物之间的相容性，在没有反应性增容剂的情况下，PEF / PA11共混物的韧性没有得到改善。当Joncryl掺入PEF / PA11共混物中时，PEF和PA11之间的界面张力明显降低，这反映在PA11分散相的细微平均粒径和狭窄分布上，这是通过扫描电子显微镜（SEM）观察到的。PEF / PA11共混物与Joncryl的复数粘度远高于PEF / PA11共混物，这可归因于Joncryl的环氧基与PEF和PA11分子链的端基反应形成接枝共聚物。因此，在Joncryl的存在下，PEF和PA11之间的相容性和界面粘合性大大提高。与1.5 phr Joncryl相容的PEF / PA11共混物的断裂伸长率和缺口冲击强度显着提高，分别为90.1％和30.3 kJ / m 在Joncryl的存在下，PEF和PA11之间的相容性和界面粘合性得到了极大的改善。与1.5 phr Joncryl相容的PEF / PA11共混物的断裂伸长率和缺口冲击强度显着提高，分别为90.1％和30.3 kJ / m 在Joncryl的存在下，PEF和PA11之间的相容性和界面粘合性得到了极大的改善。与1.5 phr Joncryl相容的PEF / PA11共混物的断裂伸长率和缺口冲击强度显着提高，分别为90.1％和30.3 kJ / m²分别与纯PEF的3.6％和3.8 kJ / m ²相比。这项工作提供了一种有效的方法来提高PEF的韧性，从而可以扩展其在包装中的广泛应用。