Research Article

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

Table 6

Area of the molecule (/nm2·mol−1) 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 K298.15 K303.15 K
SDS-rich

0.0000961.59E 085.14E 084.06E 08
0.0002401.86E 102.43E 101.80E 10
0.0004808.37E 104.25E 105.95E 10
0.000672−3.48E 10−3.88E 10−5.14E 10
0.0007921.15E 101.09E 102.28E 10
0.000960−3.91E 10−1.54E 10−1.87E 10
0.006011−2.36E 10−2.61E 10−3.31E 10
0.007200−4.63E 11−4.60E 11−5.42E 11
0.007920−2.49E 10−2.22E 10−1.47E 10
0.009000−4.02E 10−8.32E 10−3.99E 10
0.010800−5.58E 10−1.05E 09−9.39E 10
0.012000−1.03E 09−3.14E 10−1.30E 09
DTAB-rich
0.0008642.68E 091.02E 081.08E 08
0.0009601.72E 114.07E 113.05E 11
0.0015367.73E 101.13E 101.01E 10
0.002016−1.06E 095.81E 10−4.90E 10
0.0024967.67E 111.07E 101.26E 10
0.002976−1.43E 10−6.05E 11−9.21E 11
0.003264−1.32E 11−1.28E 11−1.57E 11
0.003600−2.74E 11−3.94E 11−3.15E 11
0.005040−2.47E 10−1.13E 10−1.11E 10

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.