Abstract: PET/PA6 blends were prepared by melt blending with an epoxy-based chain extender, and their crystallization characteristics, rheological properties and phase structures at different addition levels of epoxy-based chain extender were investigated by DSC, rotary rheometer and SEM. The results indicated that the combination of PA6 and epoxy-based chain extender improved the crystallization temperature and crystallization rate of PET domain significantly. Meanwhile, the incorporation of epoxy-based chain extender also enhanced the comprehensive performance of the blends due to the improvement of the compatibility between the PET and PA6 phases.

Key words: polyethylene terephthalate;polyamide 6;epoxy-based chain extender, miscibility