| Budget Amount *help |
¥20,020,000 (Direct Cost: ¥15,400,000、Indirect Cost: ¥4,620,000)
Fiscal Year 2013: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2012: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2011: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
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| Research Abstract |
In this study we focused on polymer dynamics under fast flow. We performed viscoelastic and dielectric measurements under fast flow. By particle tracking velocimetry, we confirmed that the dielectric relaxation is not accelerated under fast uniform shear field. To explain this result, we constructed a semi-phenomenological dumbbell model with non-isotropic, flow-rate dependent friction constant for polymer. The flow-rate dependence of the friction was extracted from experimental data for stress relaxation after cessation of fast elongational flows. We implemented the flow-rate dependent friction into a molecular model that is able to semi-quantitatively predict viscoelasticity of polymers under fast flows.
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