Micellar Behavior of Pluronic P-85 in an Aqueous Solution.
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概要
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The micellar formation and the micellar structure of poly (ethylene oxide)/poly (propylene oxide)/poly (ethylene oxide) triblock copolymer, pluronic P-85, in aqueous solution were investigated in terms of surface tension, fluorometric analysis, static and dynamic light scattering measurements.Two clear discontinuities corresponding to the cmcI (at a low concentration) and cmcII (at a high concentration) were found in the relationship between the surface tension and P-85 concentration. Monomolecular micelles were found at cmcI while polymolecular micelles appeared at cmcII. Furthermore the average number of micelle aggregation, the micellar size and the micellar shape varied greatly with changing in the P-85 concentration.
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