An Interaction of Anionic- and Cationic-Rich Mixed Surfactants in Aqueous Medium through Physicochemical Properties at Three Different Temperatures

Table 9

Hydrodynamic volume (/nm³) of SDS-rich and DTAB-rich surfactants in the aqueous medium at the three different temperatures T = 293.15, 298.15, and 303.15 K and at 0.1 MPa.

M (mol·L^−1)	293.15 K	298.15 K	303.15 K
	SDS-rich
0.005000	1.00	3.39	−15.23
0.000096	916.87	−39.94	3531.75
0.000240	241.47	2.07	130.18
0.000480	314.06	−1.57	379.62
0.000672	80.21	−48.37	98.28
0.000792	14.54	55.54	50.12
0.000960	20.86	8.03	−40.27
0.006011	0.75	4.97	−7.34
0.007200	7.05	4.42	−5.18
0.007920	8.02	11.15	−3.83
0.009000	5.34	8.93	−4.69
0.010800	5.90	2.98	6.06
0.012000	3.51	22.96	−1.86
	DTAB-rich
0.010000	1.64	3.79	−10.62
0.000864	346.48	−70.79	160.87
0.000960	390.88	−52.25	269.83
0.001536	249.95	−30.43	108.93
0.002016	185.34	−27.55	184.28
0.002496	218.35	−23.30	296.68
0.002976	402.67	−16.38	336.42
0.003264	84.93	−16.36	500.46
0.003600	6.79	−9.75	2.07
0.005040	89.63	0.16	31.61

M (mol·L⁻¹) is SDS and DTAB molarity in solvents (±3 × 10⁻⁴ mol·L⁻¹) and standard uncertainties u are u(m) = 0.00001 mol·L⁻¹, u(T) = ±0.01 K, and u(p) = ±0.01 MPa.