Figure 2
From: Dynamical shapes of droplets of cyclodextrin-surfactant solutions

Surface tension of Eq. (3) as function of the ratio R for the anionic surfactant at 283.15K (solid line). Square points are experimental values from Ref.12 for the mixture x mM \({\text {C}}_{14}{\text {SO}}_4^-\) (S) + 10 mM \(\alpha\)-cyclodextrin (\(\alpha\)-CD) + water, with \(R = [S]/[\alpha\)-CD] \(= x/10\) at 283.15 K. The dashed line is only to aid visualization. Water surface tension \(\gamma _0\) was taken as 72 mN/m. The value of \(\eta\) (55 mN m\(^2\)/mol) was fitted as to match the highest R experimental surface tension value. The other parameters where: \(\mu _e = 13.96\) D, \(\zeta =6\), \(h=21.9\) Å and \(d=14.6\) Å11.