2007 Fiscal Year Final Research Report Summary
Preparation and Properties of Environmentally Friendly Self-reinforced Composites
| Project/Area Number |
17310047
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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 | Kobe University |
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Principal Investigator |
NISHINO Takashi Kobe University, Graduate Scheel of Engineering, Professor (40180624)
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| Co-Investigator(Kenkyū-buntansha) |
KOTERA Masaru Kobe University, Graduate School of Engineering, Assistant Professor (80403301)
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| Project Period (FY) |
2005 – 2007
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| Keywords | environmentally friend / composite / mechanical property / heat resistance / cellulose / polv(vinvl alcohol) / sal-reinforcement / suner critical carbon dioxide |
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| Research Abstract |
Self-reinforced composite, in which reinforcement and matrix are both composed of chemically same substance, was prepared using environmentally-friendly materials. The structure and properties of two kinds of composites, that is, all-cellulose composite and all-poly (vinyl alcohol) (PVA) composite, were investigated in this research project. The former is composed of totally biomass resource. We tried two different processes. One is by dissolving the cellulose fiber surface selectively using solvent, and the other is by converting the cellulose fiber surface into thermoplastic cellulose derivative using supercritical carbon dioxide as reaction medium. The all-cellulose composite could be successfully prepared by converting the fiber surface into the matrix using these methods. The composites showed excellent mechanical properties superior to those of conventional glass-fiber reinforced composite (GFRP).They were also found to possess high thermal resistance and high optical transparenc
… More
y. Part of this work was awarded the 2007 prize of the cellulose society, Japan.
PVA is a kind of biodegradable polymers, and also known as a water soluble polymer. However, high temperature (boiling water) is needed to dissolve highly crystalline PVA. So water-solubility of PVA can be distinguished by the difference of the crystallinity. All-PVA composite could be prepared by impregnating PVA aqueous solution into highly drawn / high crystalline PVA fibers. By optimizing preparation methods and conditions, the all-PVA composite with its modulus > 17 GPa, tensile strength > 600 MPa could be prepared. These correspond to those of high performance composites, which indicates that all-PVA composite can be a good candidate as an alternative of conventional GFRP. The composite was optical transparent, and these properties could be also controlled by the fiber alignment in the composite.
During these three years, the project of the preparation and properties of environmentally friendly self-reinforced composites proceeded with the program as arranged. Less
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[Presentation] セルロースナノ複合材料2006
Author(s)
西野 孝
Organizer
繊維学会 第31回関西繊維科学講座
Place of Presentation
京都工芸繊維大学
Year and Date
2006-12-07
Description
「研究成果報告書概要(和文)」より
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[Presentation] Self Reinforced Cellulose Composites2006
Author(s)
Takashi, Nishino, Noriko, Arimoto, Nattakan, Soykeabkaew, Ton, Peijs
Organizer
4th Intemational Workshop on Green Composites
Place of Presentation
Nihon University
Year and Date
2006-09-14
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Self Reinforced Ecocomposites2006
Author(s)
Takashi, Nishino, Noriko, Arimoto, Satoshi, Yamauti
Organizer
6th Joint Canada-Japan Workshop on Composites
Place of Presentation
Rrerson Univerisity
Year and Date
2006-08-24
Description
「研究成果報告書概要(欧文)」より
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[Presentation] 環境調和型複合材料2005
Author(s)
西野 孝
Organizer
第3回 神戸工学サミット
Place of Presentation
神戸大学
Year and Date
2005-04-22
Description
「研究成果報告書概要(和文)」より
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