Calculated microphase distribution of endcaps (orange), cylinders (grey) and junctions (blue) as well as the corresponding differences in standard reference chemical potential respective to cylinders dependent on the initial spontaneous packing parameter P _init and the uranyl content x. The calculated relative viscosity curve is shown in as dashed green line. The relative decrease of the initial spontaneous packing parameter from x = 0 to x = 0.45 was set to ΔP ₀ = 0.7. The total extraction concentration was chosen to be 1.2 M and the bending constant κ* = 2 kT/extractant. The position of the Monte-Carlo-like simulation shown in Figure 15 is indicated by a red dashed line.