glass transition of a single chain : approach for rubber elasticity In non-equilibrium state
| Project/Area Number |
20340112
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Biophysics/Chemical physics
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| Research Institution | Osaka University |
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Principal Investigator |
INOUE Tadashi Osaka University, 大学院・理学研究科, 教授 (80201937)
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| Co-Investigator(Kenkyū-buntansha) |
SHIKATA Toshiyuki 大阪大学, 大学院・理学研究科, 准教授 (10178858)
URAKAWA Osamu 大阪大学, 大学院・理学研究科, 講師 (70273539)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥16,640,000 (Direct Cost: ¥12,800,000、Indirect Cost: ¥3,840,000)
Fiscal Year 2010: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2009: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2008: ¥11,310,000 (Direct Cost: ¥8,700,000、Indirect Cost: ¥2,610,000)
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| Keywords | ガラス転移 / 応力光学則 / ゴム弾性 / 複屈折 / 光ピンセット / 応力光学係数 / 粘弾性 / セグメント / 流動複屈折 / レオロジー |
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| Research Abstract |
The glass transition of polystyrene (PS) dissolved in mesitylene (MSL) was studied. The complex shear modulus of the polystyrene solutions was measured over a wide temperature range. The modulus data were time-temperature superposed to construct the composite curve. The frequency dependence of the modulus corresponding to the glass transition of polystyrene was well described by the linear damped torsional oscillator model, suggesting that the chain connectivity of PS governs the glassy relaxation in the solutions and the inter-chain interaction has a minor effect on this relaxation, which is quite different from the situation in bulk PS.
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Report
(4 results)
Research Products
(31 results)
