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Wide-angle X-ray diffraction (WAXS) patterns of electrospun biopaper samples: pure PHBV, PHBV + Res, PHBV/ChCl:EG, PHBV/ChCl:EG + Res. (a) Full diffraction patterns showing major crystalline peaks; (b) zoomed-in view (15°–26° 2θ) highlighting differences in crystalline structures.
