A new dynamic density functional method(mesodynamics) was used to simulate microphage separation kinetics of the aqueous solution of the triblock polymer surfactant (ethylene oxide) 27 (propylene oxide) 39 (ethylene oxide)27. We used the method of reference 12 to perform the parameterization. Each polymer chain was substituted by a Gaussian chain. The dynamic evolution process of the system was investigated, which is hard to be determined by experiments now. We discussed the influence of relative block sizes and the concentration of the polymer on the morphology and the property of the mixtures. The simulation results show that the morphology of the pluronic water mixture is sensitive to the length of the PPO chain. The results also indicate that the dynamic evolution process can be divided into two stages.

Key words: NON IONIC SURFACTANTS, POLYETHYLENE OXIDE