Table 3.

Water contact angle and zeta potential of all the prepared membranes.

Membrane	Water Contact Angle (°)	Zeta Potential (mV)
		pH = 4	pH = 5	pH = 7
M0	86.9	−2.34	−6.25	−14.17
M1	82.6	−2.84	−7.15	−15.38
M2	79.3	−2.96	−8.97	−18.23
M3	78.4	−3.16	−10.14	−21.01