Improving Anti-Protein-Fouling Property of Polyacrylonitrile Ultrafiltration Membrane by Grafting Sulfobetaine Zwitterions

Figure 6

Sectional structure and surface structure of PAN-50 membrane. (a) and (b) PAN, (c) and (d) hydrolyzed PAN, (e) and (f) PAN-M1, (g) and (h) PAN-M2, and (i) and (j) PAN-M3.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)