| Project/Area Number |
61550654
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
高分子物性
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| Research Institution | Technological University of Nagaoka |
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Principal Investigator |
SHIOMI Tomoo Associate Professor of Technological University of Nagaoka, 工学部, 助教授 (10134967)
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| Co-Investigator(Kenkyū-buntansha) |
TEZUKA Yasuyuki Research Associate of Technological University of Nagaoka, 工学部, 助手 (80155457)
IMAI Kiyokazu Professor of Technological University of Nagaoka, 工学部, 教授 (60115102)
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| Project Period (FY) |
1986 – 1987
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| Project Status |
Completed (Fiscal Year 1987)
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| Budget Amount *help |
¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1987: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1986: ¥1,000,000 (Direct Cost: ¥1,000,000)
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| Keywords | Polymer blend / Random Copolymer / Intermolecular Interaction / Equation-of-State Theory / 相溶性 |
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| Research Abstract |
The following results were obtained in this study.
(1) Polymer blends containing random copolymers(s) may be miscible for a certain range of the copolymer composition even though the combinations of the corresponding homopolymers are immiscible. In this case, a repulsive force between the different components in the copolymer is large enough compared to that between a component in the copolymer and another polymer.
(2) Intermolecular interactions for random copolymer mixtures were theoretically evaluated from the parameters of the corresponding homopolymers, using the equation-of-state theory extended to random copolymer systems. First, the theory was applied to the ternary system, copolymer/copolymer(or homopolymer)/solvent. The theoretical copolymer-composition dependences of the thermodynamic quantities as well as the intermolecular interaction were in agreement with experimental ones. Next, the theory was applied to polymer blends consisting of copolymers. The calculated dependence of the intermolecular interaction corresponded to the experimental one of compatibility on the copolymer composition.
As described above, this study gave possibility of theoretical evaluation of intermolecular interactions and other thermodymamic quantities for polymer blends and solutions containing random copolymers.
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