2015 Fiscal Year Final Research Report
Preparation of compositionally graded hollow spherical particles with water-retaining ability for soil improvement
Project/Area Number |
24560893
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Material processing/treatments
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Research Institution | Nihon University |
Principal Investigator |
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Project Period (FY) |
2012-04-01 – 2016-03-31
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Keywords | 噴霧乾燥 / アパタイト / 組成傾斜 / マイクロカプセル / 保水材 |
Outline of Final Research Achievements |
In the spray-drying method, an aqueous solution containing dissolved materials is sprayed inside a furnace so that the materials undergo instant drying to form a powder. If two materials with different solubility exist in the solution, the particle wall is formed by depositing into low solubility material first, then, high solubility material deposited in the inner side continuously. In the present work, I could prepare the hollow spherical particles with size of 1-5 um. The particles were hydroxyapatite (outer surface)/silica (inner surface) compositionally graded hollow spherical particles. The compressive strength of these particles were maximum 17 MPa. The particles indicates a water resistance, was able to hold the water inside. Moreover, it could be suppressed soil-drying by adding the particles into the soil.
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Free Research Field |
無機粉体の形態制御
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