| Project/Area Number |
15380120
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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 |
林産科学・木質工学
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| Research Institution | Kyoto University |
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Principal Investigator |
YANO Hiroyuki Kyoto University, RISH, Professor (80192392)
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| Co-Investigator(Kenkyū-buntansha) |
KAWAI Shu-ichi KYOTO UNIVERSITY, RISH, Professor (00135609)
SUGIYAMA Junji KYOTO UNIVERSITY, RISH, Professor (40183842)
関 紀繁 木村化工機(株), 開発部, 主任研究員
高木 雅人 日本触媒(株), 開発部, 主任研究員
赤石 司 スターライト工業(株), トライボロジー研究所, 副所長
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| Project Period (FY) |
2003 – 2006
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| Project Status |
Completed (Fiscal Year 2006)
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| Budget Amount *help |
¥12,600,000 (Direct Cost: ¥12,600,000)
Fiscal Year 2006: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2005: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2004: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2003: ¥8,900,000 (Direct Cost: ¥8,900,000)
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| Keywords | Environmental friendly / Biomass / Nanomaterials / Injection moulding / Nanofiber / 植物繊維 / ミクロフィブリル化 / 生分解性プラスチック / 射出成型 / 強度特性 |
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| Research Abstract |
Recently 'green-composites' have been focused on materials made from plant fibers and bio-based resins. Plant fibers are not only renewable but also have low density and high strength when compared to glass fibers, which are in common use for making FRP (Fiber Reinforced Plastics). Hence, nano-sized plant fibers are recognized as a potential reinforcing material. Fibrillation of wood pulp fibers (microfibrillated cellulose, MFC) is one of the ways to obtain nano-sized plant fibers. There are many reports describing that mechanical and thermal properties of composites are highly enhanced by utilizing such plant nanofibers as reinforcing material. On the basis of these researches, in this project, we studied the production of MFC reinforced biodegradable PLA mouldings by injection mouldings. The main purpose of this research is to obtain fibrillated wood pulp/PLA nanocomposites by the melt-mixing method and to assure the potential of the nanocomposites for injection moulding.
By premixing MFC and PLA in the solvent, we could make well dispersed fiber composites and improve strength and Young's modulus of the composites over the neat PLA. Surface acetylation of MFC was found to be effective to increase interactive forces between cellulose nanofiber and PLA. The addition of acetylated MFC to PLA by 5 wt% improved the Young's modulus and tensile strength of PIA by 25% and 15%, respectively.
Finally, we, have succeeded in the injection moulding of MFC reinforced PIA, which showed excellent thermal stability compared to neat PIA mouldings.
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