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. 2020 Dec 25;13(1):57. doi: 10.3390/polym13010057

Figure 2.

Figure 2

HR-FESEM photomicrographs of surface and impact fracture of semi-IPN PHBV/PVA with different percentage of PPy nanoparticles: (a) Surface of PHBV/PVA E2 composite; (b) Cross-section of PHBV/PVA E2 composite; (c) Surface of PHBV/PVA E10 composite; (d) Cross-section of PHBV/PVA E10 composite; (e) Surface of PHBV/PVA E15 composite; (f) Cross-section of PHBV/PVA E15 composite; (g) PPy nanoparticles embedded within the PHBV/PVA E15 composite in the cross-section at higher magnification. Arrows in (b) and (d) indicate PPy nanoparticles embedded in the matrix.