2006 Fiscal Year Final Research Report Summary
Characterization of structure development and relaxation for nano-particle suspensions confined to anisotropic fields and the preparation of solid films
| Project/Area Number |
17550190
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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 |
Polymer/Textile materials
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| Research Institution | Kyoto Institute of Technology |
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Principal Investigator |
TANAKA Katsufumi Kyoto Institute of Technology, Graduate School of Science and Technology, Associate Professor, 工芸科学研究科, 助教授 (50207081)
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| Co-Investigator(Kenkyū-buntansha) |
YONETAKE Koichiro Yamagata University, Faculty of Engineering, Professor, 工学部, 教授 (30143085)
KIMURA Hiroshi Gifu University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (40313910)
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| Project Period (FY) |
2005 – 2006
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| Keywords | Structure and physical properties of polymers / Nano-materials / Composite materials and physical properties / Material processing / Analysis and characterization |
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| Research Abstract |
1. (1) Rheological behavior of the colloidal suspensions of silica spheres and sodium montmorillonite flakes in the exhaustively deionized aqueous media were investigated in the presence of small amounts of sodium chloride. The viscosity of the flake system initially decreased and then increased as the concentration of the sodium chloride increased, the tendency of which is different from the sphere system.
(2) The sodium montmorillonite flakes in organic solvents became stable as the dielectric constant of the solvents increased, and the electrical double layer in organic solvents was considered to be thinner than that in the aqueous system.
2. (1) The fullerene nano-particles were well-dispersed in a press film of polystyrene and the composite film was stable at high temperatures.
(2) Solid films were prepared from isotropic solutions of cellulose derivatives and the solutions suspending titanium dioxide nano-particles. The initial process was sensitively monitored by the polarized opti
… More
cal microscopy and the dynamic viscoelastic measurements. The dynamic viscoelastic behavior would be sensitively affected by the local behavior of the sample around the edge of the fixture. The process just before termination was sensitively monitored by the dielectric measurements. In the solid film prepared under the electric field with a large amplitude, a uniaxial-like orientation was found and the helix axis was perpendicular to the electric field.
3. (1) Rheological monitoring was found to be more effective than the electrical monitoring of the curing process for a reactive silicone.
(2) Apparent electrical properties changed during the electrical orientation process of the carbon nano-fiber in suspension.
(3) Orientation behavior was investigated under sinusoidal electric field for anisotropic solutions of cellulose derivatives and the solutions suspending multi-walled carbon nano-tubes after shearing. The electrical properties depended on the directions of the initial shear and the electric field. Less
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Research Products
(26 results)
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[Journal Article] (Co-authored)
Author(s)
H.Kimura
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Journal Title
Application and Drying Technology for Electronics (in Japanese)(supervised by S.Yoshida)(Technical Information Institute, Co., LTD.) (in press)
Description
「研究成果報告書概要(欧文)」より
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