| Project/Area Number |
13650748
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Composite materials/Physical properties
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| Research Institution | OKAYAMA UNIVERSITY |
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Principal Investigator |
SHIMAMURA Kaoru Faculty Engineering, Okayama University, Professor, 工学部, 教授 (80013506)
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| Co-Investigator(Kenkyū-buntansha) |
MURAKAMI Syozo Institute Chemical Research, Kyoto University, Assistant, 化学研究所, 助手 (10260621)
UCHIDA Tetsuya Faculty Engineering, Assistant, 工学部, 助手 (90284083)
KIMURA Kunio The Graduate School of Natural Science and Technology, Associate Professor, 大学院・自然科学研究科, 助教授 (40274013)
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 2002: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2001: ¥2,800,000 (Direct Cost: ¥2,800,000)
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| Keywords | Rigid Polymer / Network / Nylon 6 / Composite / Mechanical Property / Graft Polymer |
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| Research Abstract |
Rigid polymer networks were prepared by polycondensation of 2, 5-diamino-1, 4-benzene-dithiol with a mixture of terephthalic acid (TPA) and trimesic acid (TMA). The apparent density was dependent on TPA/TMA ratio and much less than that of linear PBZT (1.57 g/cm^3), showing existence of many nano voids within the network. As the segment was so rigid, many COOH's were left around the voids. The network swelled twice in weight with ε-caprolactam, which was polymerized into a composite form of nylon6 impregnated rigid polymer network. Extraction of free nylon6 from the composite with formic acid showed that a quarter of nylon6 grafted directly to rigid polymer network. The grafted nylon6 could not crystallize evidenced by DSC measurements. On the other hand, particles of PBZT network (several hundred nm in diameter) were prepared by stopping the polycondensation just before gelation. A composite film was prepared with the particles swollen with ε-caprolactam. The ratio of PBZT network/nylon6 was 1/3 and the apparent density of the composite film was 1.23 g/cm^3 which is higher than that of a pure nylon6 film (1.16 g/cm^3). Significant improvement in the mechanical property was observed for this composite.
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