Synthesis of inorganic network structure using organic polymer gel (有機高分子ゲルを反応場とした無機ネットワーク構造体の作製)

合成了有机聚合物水凝胶与无机胶体的偶联物。无机胶体是在凝胶网络中生成的。丙烯酸凝胶与水合氧化铈的偶联物对As(III)具有较高的吸附容量(30 mg/g)，但其比表面积较小(2m2/g)。在比表面积为50m~2/g的情况下，水合氧化铈对As(III)的吸附容量为11 mg/g，凝胶的网状结构使胶体在网络中呈高分散状态，这是由于凝胶的轻微膨胀导致了胶体高接触面积的产生。在吸附砷的过程中，没有观察到胶体在结合物中的溶解。利用有机凝胶网络作为反应场，可以制备出高性能的共轭吸附剂。以丙烯酸/PVA凝胶和明胶凝胶作为磷灰石的反应场，制备了水凝胶网络中的磷灰石。在丙烯酸/PVA和明胶凝胶中，观察到在凝胶网络上形成了磷灰石。聚合物/磷灰石偶联物在干燥状态下是多孔的，机械强度很高。它们的焙烧产物也呈现出多孔结构。研究了凝胶的网络结构与制备的无机材料的网络结构之间的关系。确定了凝胶中合成的有效性，确定了制备无机网络的最佳合成条件。本研究所研究的方法对于简单制备无机多孔网络材料是有效的。

Synthesis of conjugates between organic polymer hydrogel and inorganic colloids were carried out. The inorganic colloids were produced in the network of the gel. The conjugate between acrylic acid gel and hydrated cerium oxide revealed high adsorption capacity for As(III) (30mg/g) in spite of its small specific surface area (2m^2/g). Adsorption capacity of hydrated cerium oxide for As(III) was 11mg/g Although the specific surface area of the adsorbent was 50m^2/g. The network structure of gel produces a high dispersion state of the colloid in the network due to a slight swelling of gel, resulting in a production of high contact area of the colloid. Dissolution of the colloid was not observed in the conjugate during the adsorption of arsenic. The high performance conjugate adsorbent can be prepared using the organic gel network as a reaction field. Preparation of apatite in the network of hydrogel was performed using acrylic acid/PVA gel and gelatin gel as a reaction field of the apatite. In the acrylic acid/PVA and gelatin gels, formation of the apatite on the network of the gels was observed. The polymer/ apatite conjugates were porous and mechanically strong in their dry state. The calcined products of them also showed porous structure. The relationship between the network structure of the gels and the network structure of produced inorganic materials was investigated. The effectiveness of the synthesis in the gel and the optimum synthetic condition for the preparation of inorganic network were confirmed. The method studied in this research is effective in the simple preparation of inorganic porous network materials.