Interaction between Aqueous Solutions of Hydrophobically Associating Polyacrylamide and Dodecyl Dimethyl Betaine

Figure 11

AFM images of 1500 ppm HAPAM with different BS-12 concentrations: (a) 0 ppm BS-12, (b) 100 ppm BS-12, and (c) 400 ppm BS-12.

(a)

(b)

(c)