Controlling the Secondary Surface Morphology of Electrospun PVDF Nanofibers by Regulating the Solvent and Relative Humidity

Table 2 The basic properties of the oils used in this work

Oil types	Density (g/cm³)	viscosity (mPa s)	Surface tension (mN/m)
Olive oil	0.9112	81.5	33.075 ± 0.030
Motor oil	0.8581	135.4	30.246 ± 0.030
Silicon oil	0.9549	468.3	19.979 ± 0.030