Dielectric Analysis on the Microscopic Characteristics of the Cloudy Silwet L-77 Solution

Dielectric relaxation spectra of the cloudy Silwet L-77 solutions were investigated from 40 Hz to 110 MHz. A striking Maxwell-Wagner relaxation was observed at about 10⁶ Hz, which was assigned to the interfacial polarization between the micelle particle (L₁) and the continuous water (W). Based on the concentration and the temperature dependence of the dielectric increment and the low-frequency conductivity (σ _l ), the critical data and the corresponding micellar structures of the Silwet L-77 solutions under cloudy state were clarified. Furthermore, the viscosity evolution in the W-L₁ region was confirmed according to an anomalous lower temperature dependence of σ _l .