Interaction and Adsorption of Hydrophobically Modified Polyacrylamide on Silica and Asphaltene Surfaces

Figure 2

AFM images of different samples: (a) silica, (b) silica after adsorption of HMPAM, (c) asphaltene, and (d) asphaltene after adsorption of HMPAM.

(a)

(b)

(c)

(d)