ゾル-ゲル法を用いたハイドロキシアパタイト厚膜の作製とイオン交換性

概要

論文の詳細を見る
Fabrication of hydroxyapatite (HAp) sheets was attempted by the sol-gel method. The sol, the starting material, was prepared with 5 % sodium alginate solution and sodium diphosphate. The sol sheet was dragged out 0.5〜2.0 mm thick on a glass plate with a chromatographic sheet maker and subjected to an ion-exchange process in the solution consisting of Ca(CH_3COO)_2 and CaCl_2. The gel sheet, after calcium substitution, was fired at 900〜1200℃ for 1 h. The gel sheet ion-exchanged simultaneously from both sides maintained its shape after firing but became uneven. Therefore, it was tried to produce a flat sheet on an alumina plate by a dip-coating method. The thickness of the sheet was proportional to the number of repeated runs consisting of dip-coating, ion-substituting and firing. The fired HAp can remove Pb^<2+> ions in a strong acidic solution of pH 3 and pH 2 containing Pb^<2+> ions.
社団法人日本材料学会の論文
1992-06-15