Table 6.

Comparison of experimental with ideal parameters and interaction parameter (β) of the SLES-bile salt mixtures

α [SLES]	cmcex	cmcid	x1	xid	β
	(mM)
Sodium deoxycholate
0	4.30	-	-	-	-
0.1	2.857	3	0.384	0.374	-0.22
0.2	2.203	2.29	0.566	0.573	-0.16
0.3	1.845	1.86	0.694	0.697	-0.03
0.4	1.528	1.56	0.769	0.782	-0.12
0.5	1.322	1.35	0.830	0.843	-0.16
Sodium cholate
0	12.90		-	-	-
0.1	4.461	5.15	0.611	0.644	-0.60
0.2	2.864	3.21	0.746	0.802	-0.64
0.3	2.165	2.33	0.826	0.874	-0.57
0.4	1.730	1.83	0.873	0.915	-0.57
0.5	1.427	1.51	0.899	0.942	-0.78
Sodium 7-oxodeoxycholate
0	61.10
0.1	6.511	7.14	0.832	0.893	-0.78
0.2	3.598	3.8	0.906	0.949	-0.81
0.3	2.493	2.59	0.938	0.97	-0.87
0.4	1.906	1.96	0.955	0.98	-1.03
0.5	1.549	1.58	0.969	0.987	-0.94

cmc^ex the experimentally obtained values, each result is the average of three separate determinations.

cmc^id the values for the critical micelle concentrations of ideal mixtures, calculated according to Clint's theory of ideal mixtures.

x₁ mole fractions of the more hydrophobic surfactant in the real mixed micelles, according to Rubingh.

x^id mole fractions of the more hydrophobic surfactant in the ideal mixed micelles, according to Motomura's model.