Abstract
The partitioning behavior of a polydisperse nonyl phenol polyethoxylate of an average ethylene oxide (EO) chain length of 7.3 units (N7.3) between water and hexane has been studied as a function of temperature and total surfactant concentration. A complete analysis of all components of the polydisperse mixture in both the oil and water phases was made using a high-resolution capillary GC column and on column injection. Thermodynamic parameters Δ G W→O o, Δ H W→O o and Δ S W→O o have been obtained for the total surfactant system and the individual components. An ideal mixing, phase separation model has been applied to calculate theoretical partitioning behavior as a function of temperature and surfactant concentration, above and below the critical micelle concentration. Excellent agreement between theory and experimental results was obtained.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call