| Project/Area Number |
21760610
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Properties in chemical engineering process/Transfer operation/Unit operation
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| Research Institution | Hiroshima University |
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Principal Investigator |
YAMAMOTO Tetsuya Hiroshima University, 大学院・工学研究院, 助教 (10432684)
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| Project Period (FY) |
2009 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | 電気泳動 / ナノ粒子 / ビーズミル / 分級 / ゼータ電位 / CFDシミュレーション / AFM / EFFF / ビーズミル動 |
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| Research Abstract |
The purpose of the present study is to develop a new nanoparticle-classification technique to replace centrifugal separation method. The zeta potential of the particles in the slurry dispersed by bead milling exhibited clear size dependence, which was investigated in detail by AFM. That is, the zeta potential of the smaller silica particles was more negative than that of larger silica particles. Hence, the particles were classified using an EFFF system. Using a low applied potential of 5 V, the silica particles with the size from 50 to 200 nm were able to be classified. This method prevented deposition of negatively charged silica particles in the apparatus and allowed continuous operation.
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