Novel Preparation Methods of Anisotropic Poly(vinyl alcohol) Gels for Higher Mechanical and Swelling Performance
| Project/Area Number |
15K01311
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Biomedical engineering/Biomaterial science and engineering
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| Research Institution | Yokohama National University |
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Principal Investigator |
Suzuki Atsushi 横浜国立大学, 大学院環境情報研究院, 教授 (90162924)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | ポリビニルアルコールゲル / キャストドライ法 / 凍結解凍法 / 高強度 / 高膨潤 / 微結晶 / 異方性 / ポリビニルアルコール / 高強度ゲル / 高膨潤ゲル / 異方構造 / 一方向凍結法 / 積層法 |
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| Outline of Final Research Achievements |
The preparation conditions of poly(vinyl alcohol) gels using the freeze-thawing (FT) and the cast-drying (CD) methods were controlled precisely. It was confirmed that the breaking stress is well-correlated with the swelling ratio, and that the realization of both high water-absorbability and high mechanical strength is difficult prepared by conventional methods. Therefore, recently introduced preparation methods were studied here. Using a unidirectional freezing method, a micrometer scale fibril network structure was formed in the network of FT gels. In addition, a lamination method and hybrid techniques were examined. It was shown that higher mechanical performance was realized by the synergistic interaction between the gel layers. Higher water-absorbability and mechanical performance were realized in the anisotropic gels by controlling the size, number, and distribution of microcrystallites to form the controlled network structures in nano- and micro-scales.
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Report
(4 results)
Research Products
(11 results)
