Table 1. Sample Designation and Polyurethane (PU) Membrane Composition.

Sample designation	H12MDI (Isocyanate) (g)	TMP (g)	PEG (g)	DMPA (g)	DBTDL (g)
TMP 100	9.5238	0.1770	55.277	0.1771	0.0572
TMP 75	9.5236	0.1327	55.279	0.1771	0.0572
TMP 50	9.5238	0.0886	55.278	0.1771	0.0572
TMP 25	9.5236	0.0443	55.278	0.1770	0.0572