Greetings colleagues, can anyone explain to me about solubility of hydroxyapatite shyntezised HAp from eggshell. what are the parameters of solubility HAp in water?
The solubility of hydroxyapatite (HAp) synthesized from eggshell, like any other form of HAp, depends on several factors. Let me share with you some parameters that can help influence the solubility of HAp in water:
-Particle Size: Smaller particle size generally leads to increased solubility due to the higher surface area-to-volume ratio. Synthesis methods that produce finer particles can result in higher solubility.
-Surface Area: The specific surface area of HAp particles influences their solubility. Higher surface area allows for more interaction with water molecules, leading to increased solubility.
-pH and Ionic Strength: The pH of the solution and the ionic strength can significantly influence the solubility of HAp. Lower pH (more acidic conditions) and higher ionic strength can enhance the solubility of HAp.
-Temperature: Solubility generally increases with temperature, but this relationship can be complex and dependent on other factors such as pH and ionic strength.
-Presence of Organic Matrices: HAp synthesized from natural sources like eggshell may contain organic matrices. These matrices can influence the solubility of HAp by affecting the surface chemistry and interactions with water molecules.
-Phase Composition: HAp can exist in different phases, such as stoichiometric HAp, carbonate-substituted HAp, or other forms. The phase composition can affect the solubility behavior of HAp in water.
You may want to can check the literature on Hansen solubility parameters - these additive approximations can help you understand your HAp construction better in regard to solubility in solvents such as water.
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