| Project/Area Number |
15310062
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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 |
Environmental technology/Environmental materials
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| Research Institution | University of Hyogo (2004)
Himeji Institute of Technology (2003) |
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Principal Investigator |
KISHI Hajime University of Hyogo, Graduate School of Engineering, Associate Professor, 工学研究科, 助教授 (60347523)
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| Co-Investigator(Kenkyū-buntansha) |
MURAKAMI Atsushi University of Hyogo, Graduate School of Engineering, Professor, 工学研究科, 教授 (60047610)
MATSUDA Satoshi University of Hyogo, Graduate School of Engineering, Associate Professor, 工学研究科, 助教授 (40316047)
SHIRAISHI Nobuo University of Kyoto, Emeritus Professor, 名誉教授 (70026508)
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| Project Period (FY) |
2003 – 2004
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| Project Status |
Completed (Fiscal Year 2004)
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| Budget Amount *help |
¥15,800,000 (Direct Cost: ¥15,800,000)
Fiscal Year 2004: ¥6,800,000 (Direct Cost: ¥6,800,000)
Fiscal Year 2003: ¥9,000,000 (Direct Cost: ¥9,000,000)
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| Keywords | biomass / liquefaction / epoxy resin / wood / fiber reinforced / composites / plant fiber / 鉱物繊維 |
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| Research Abstract |
Wood-based thermoset epoxy resins were newly synthesized from resorcinol-liquefied wood as a resin precursor. Firstly, wood meal was liquefied by the reaction with resorcinol in a pressure-proof tube. The black paste in the tube was considered as a precursor for synthesizing the epoxy resin, because the reacted compound would include considerable amount of hydroxyl groups as reactive sites originated from the wood and the solvents. Next, the glycidyl etherification for the phenolic-OH groups was conducted and the wood-based epoxy resins were synthesized. The epoxy functionality of the resins would therefore reflect the concentration of phenolic-OH groups of the liquefied-wood. The modulus of elasticity and the flexural strength of the wood-based cured epoxy resins were equivalent to those of commercial-based bisphenol-A type epoxy resin. Also, the viscosity of the wood-based liquid epoxy resins was low enough to impregnate among reinforcing fibers. Therefore, new green composites from the renewable biomass resources, composed of the wood-based epoxy matrix resins and flax fibers, were successfully fabricated. The wood-based epoxy resins had good adhesive property to the surface of flax fibers, which indicates the high potential as matrix resins for green composites. The stiffness of the flax fiber reinforced wood-based epoxy composites were equivalent to those of the same fiber reinforced commercial-based epoxy composites.
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