Tailoring the properties of electrospun PHBV mats: Co-solution blending and selective removal of PEO

- Modified PHBV electrospun fibers by the co-solution blending with PEO and its consequent selective removal.
- The complete PEO removal after soaking in H2O for 7 days with daily refreshment.
- A decrease of the average diameter size (50-75%) after PEO removal.
- A corrugated and rough surface topography, with nodules, pits, nanopores, shallow and elongated nanoindents.
- A remarkable reduction (>75%) of the tensile modulus of electrospun PHBV mats.