2.4. Measurement of solution viscosity
The viscous properties of BaTiO3(0, 9, and 16 wt%)–PVDF solutions were measured using a stress-controlled rheometer (MCR 301, Anton Paar, Germany) with a cone and plate configuration of 25 mm diameter and 11 cone angle. The shear viscosity of the samples was measured under the rotator mode at a fixed shear rate of 30 s1.