Solubility of copper-containing calcium–phosphate glasses

The solubility of copper-containing calcium–phosphate glasses is determined as a function of the ratio CaO:P 2 O 5 , Al 2 O 3 additions, and CuO content. The glasses are characterized by high solubility in boiling water. The recorded flow of copper ions into the water ranges from 60 to 125 ppm; this makes it possible to classify the synthesized glasses as biocides. The ratio of the modifying cations and glass former, determining the structure of the phosphorus–oxygen framework of the glass, has the greatest effect on the solubility of the glass; the introduction of Al 2 O 3 and substitution of copper oxide for calcium oxide has the weakest effect.