| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
When dissolving the surafactant molecules in a non-polar or low-polar solvent, the reverse micelles are formed by aggregation of the hydrophilic group therein. It is possible to form reverse wormlike micelles having a length of μm order by changing the molecular structure of the surfactant used. When the reverse wormlike micelles are formed, thickening, gelation of the solution occurs. In this study, we used nonionic surfactants with which few studies have been done with respect to reverse wormlike micelles. We used rheological measurements and small-angle X-ray scattering measurements to understand the conditions of thickning or gelling of non-polar or low-polar solvents. As a result, we found that the molecular weight of surfactant and solubilization of a small amount of water are the important factors for the reverse wormlike micelle formation. The achievement of this research will be applicable for pharmaceutical and cosmetic formulation, fluid transport, lubrication and so on.
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