Table 1.

Material properties and filter media characteristics.

	PAN	PVDF	PP1	PP2
Surface Energy (mJ/m2) [34,35,36,37,38,39]	44.0 ~ 54.1	25.5 ~ 36.5	27.2 ~ 32.6
εr (100 Hz, 1 MHz) [31,32]	4.2	8.4 ~ 8.9	2.2 ~ 2.6
Tg (°C) [40]	95.5 ~ 105	−50 ~ −20	−20 ~ −10
Tm (°C) [41]	300 ~ 320	~ 175	~ 173
Web type	electrospun	electrospun	meltblown
Weight (g/m2) (n = 5)	2.4 (± 0.26)	5.1 ( ± 0.28)	47.3 (± 1.01)	28.9 (± 0.64)
Thickness (mm) (n = 5)	0.28 (± 0.02)	0.30 ( ± 0.03)	0.34 (± 0.02)	0.29 (± 0.02)
Fiber diameter (μm) (n = 30)	0.55 (± 0.13)	1.01 (± 0.36)	2.49 (± 0.87)	3.44 (± 1.71)

Notation. T_g: Glass transition temperature; T_m: Melting temperature; the surface energy: ε_r, T_g, and T_m are reference values [31,32,34,35,36,37,38,39,40,41]; weight: Thickness and effective fiber diameter are measured values; ‘n’ is the number of samples tested or measured.