Influence of the Branched Structure of Polyoxyethylene Units in Nonionic Surfactants on the Wettability of Anthracite: A Combined Modeling and Experimental Study

Figure 2

Adsorption process of surfactant on anthracite: (a) C₁₂(EO)₂₀ and (b) Tween 20. (A, E) Were the first-stage initial conformations, (B, F) were the first-stage final equilibrium conformations, (C, G) were the second-stage initial conformations, and (D, H) were the second-stage final equilibrium conformations.

(a)

(b)