| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2009: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Research Abstract |
We report the surface modification of micron and nano sized particles by the pressure-induced phase separation (PIPS) of CO_2-expanded solutions. We developed an ultrasonic irradiation apparatus in high-pressure fluids in order to accelerate the dispersity of surface modified particles. Shock waves generated by collapsing cavitation bubbles induced with ultrasonic irradiation accelerated the deagglomeration and dispersion of particles. The surface modified particles were applied as the hollow microspheres, porous membrane of metal oxides, and metal oxide nanoparticles-polymer composite film.
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