Fig. 1. Flow chart of POE-g-PGMA preparation

Fig. 2. FTIR Spectra of POE, non-irradiated-POE-GMA and irradiated-POE-g-PGMA

Fig. 3. Fracture-surface morphologies of PA6 and PA6/POE blends with different POE-g-PGMA contents: (a) PA6; (b) G0;(c) G1; (d) G2; (e) G3

Fig. 4. Schematic diagram of mechanical specimens and mechanical property curves of blends with different POE-g-PGMA contents: (a) tensile test specimens; (b) tested tensile test specimena; (c) tensile strength and elongation at break curve; (d) flexural strength and notched impact strength curve

Fig. 5. DSC curves of PA6 and PA6/POE blends with different POE-g-PGMA contents: (a) melting curves; (b) crystallization curves (color online)

Fig. 6. TG curves of PA6 and PA6/POE blends with different POE-g-PGMA contents (color online)

Fig. 7. Interface compatibility diagram of PA6/POE blends with different POE-g-PGMA contents: (a) pure POE, (b) pure POE-g-PGMA, (c) pure PA6, (d) the uncompatibilized G0 blend, and (e) the compatibilized G2 blend

Fig. 8. Hygroscopic coefficient as a function of POE-g-PGMA content in PA6/POE blends: (a) 0~768 h hygroscopic coefficient curve; (b) hygroscopic coefficient curve of different POE-g-PGMA contents at 768 h