Table 2.

Composition of dope solution expressed (wt %).

Chemical	Type 1		Type 2
	HF 1-0	HF 1-0.5	HF 2-0	HF 2-0.5
PVDF 6012	18	18	19	19
PVP k17	15	15	16	16
PEG400	-	-	10	10
H2O	5	5	-	-
NMP	62	61.5	55	54.5
TiO2	-	0.5	-	0.5