Preparation and some properties of poly(vinyl alcohol)-silica composite hydrogels.

生駒 修治; 野元 栄吾; 横井 弘

doi:10.1295/koron.47.1001

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Preparation and some properties of poly(vinyl alcohol)-silica composite hydrogels.

生駒修治野元栄吾横井弘

Year: 1990 Journal: KOBUNSHI RONBUNSHU Vol: 47 (12)Pages: 1001-1004 Publisher: Society of Polymer Science

DOI: 10.1295/koron.47.1001

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Abstract

新しいタイプのポリビニルアルコール (PVA) -シリカ複合体ハイドロゲルが, PVA水溶液中でテトラエチルオルトシリケートを加水分解して得られた均一溶液の凍結低温結晶化によって合成された. ゲルは弾性に富むが, 粘着性はなく, 水中では白色半透明であり, 有機溶液中では高い透明性を示した. 水中における複合体ゲルからのケイ酸の溶出はわずかであった. 複合体ゲルの脱水速度は, PVAハイドロゲルのそれと比較してかなり遅い. シリカとの複合化によって, 力学特性とレオロジー的特性は共に向上した. 複合化は, PVAとシリカの間の化学結合形成を伴い, ゲルの微細構造を変化させることが明らかになった.

Keywords:

Vinyl alcohol Self-healing hydrogels Composite number Materials science Polymer chemistry Composite material Chemical engineering Polymer

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Aerogels and thermal insulation

Physical Sciences → Chemistry → Spectroscopy

Surface Modification and Superhydrophobicity

Physical Sciences → Materials Science → Surfaces, Coatings and Films

Mesoporous Materials and Catalysis

Physical Sciences → Materials Science → Materials Chemistry

Preparation and some properties of poly(vinyl alcohol)-silica composite hydrogels.

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