Research Article

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

Table 8

Fractional volume () 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

0.0050000.00980.0331−0.1488
0.0000960.1838−0.00800.7081
0.0002400.12100.00100.0653
0.0004800.3149−0.00160.3806
0.0006720.1126−0.06790.1379
0.0007920.02410.09190.0829
0.0009600.04180.0161−0.0808
0.0060110.00940.0624−0.0921
0.0072000.10600.0664−0.0779
0.0079200.13260.1845−0.0634
0.0090000.10040.1678−0.0882
0.0108000.13300.06710.1367
0.0120000.08810.5755−0.0466
DTAB-rich
0.0100000.03430.0791−0.2075
0.0008640.5848−0.11950.2715
0.0009600.7330−0.09800.5060
0.0015360.7499−0.09130.3268
0.0020160.7299−0.10850.7257
0.0024961.0646−0.11361.4465
0.0029762.3408−0.09521.9557
0.0032640.5415−0.10433.1908
0.0036000.0477−0.06860.0146
0.0050400.88240.00160.3112

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.