Table 6.

Minimum surface tension values for the PS20/CTAB systems as a function of the mole fraction of the nonionic surfactant in different alcohol solutions at 20 °C

PS20/CTAB	10 % Methanol	10 % Ethanol	10 % Propanol	10 % Butanol
	γ min (mN/m)	γ min (mN/m)	γ min (mN/m)	γ min (mN/m)
0	40.47	35.22	34.87	25.52
0.2	37.62	35.6	35.67	25.07
0.4	37.62	38.23	40.14	24.93
0.6	36.32	36.97	42.95	25.51
0.8	37.62	36.97	38.78	26.21
1	33.10	36.97	34.87	25.92