Surface Modification of Asymmetric Polysulfone/Polyethylene Glycol Membranes by DC Ar-Glow Discharge Plasma

Figure 9

SEM micrographs of top skin layers of PSF/PEG 10 wt% membranes, untreated (a) and Ar-plasma treated at a discharge power and treatment time of 15 W and 5 min (b), respectively.

(a)

(b)