| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Outline of Final Research Achievements |
The motion of single bubbles freely rising hydrophobically modified alkali-soluble emulsion polymer (HASE) solutions are experimentally examined. In this study, HASE solutions with several different concentrations are prepared and the bubble rising motion in these HASE solutions are considered. The motion of bubbles with very unique shapes is observed, even though the profile of rheological properties doesn’t have special characteristics. The rising bubble in HASE solutions is quite different from bubbles with a cusped shape in water-soluble associative polymer solutions.
From a microscopic view, it is observed that fish backbone-type micro structures are formed at the unique shapes depending on physical properties and conditions. These microstructures are seldom visible to the naked eye. It is hypothesized that the mechanisms behind the formation of these microscopic structures are closely tied to the HASE elastic effect.
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