Each glass sample’s chemical durability was defined from its dissolution rate (DR) in distilled water. The glass samples were pulverized and sieved to particle sizes between 1 and 2 mm. One gram of glass grains was placed in a vial containing 20 mL of distilled water with an initial pH of 6.5 [19 (link)].
To study the release rate of the glasses versus time, several samples were prepared and then suspended in a thermostatic bath maintained at temperature = 25 ± 1 °C for 1 to 35 days. The specimens were taken out at various time points, residual glass samples were filtered from leachate solutions, dried at 90 °C for 10 h, and then weighted using an analytic balance sensitive (±0.1 mg) (Shimadzu AW220).
Their dissolution rates were calculated using the following formula [19 (link)]:
where Wi is the sample’s initial weight, and Wt is the sample’s weight after t days.
pH and ion measurements were carried out at the same time as the weight loss measurement took place, using a pH meter (Adwa-AD8000), and ICP-OES, respectively.
To study the release rate of the glasses versus time, several samples were prepared and then suspended in a thermostatic bath maintained at temperature = 25 ± 1 °C for 1 to 35 days. The specimens were taken out at various time points, residual glass samples were filtered from leachate solutions, dried at 90 °C for 10 h, and then weighted using an analytic balance sensitive (±0.1 mg) (Shimadzu AW220).
Their dissolution rates were calculated using the following formula [19 (link)]:
where Wi is the sample’s initial weight, and Wt is the sample’s weight after t days.
pH and ion measurements were carried out at the same time as the weight loss measurement took place, using a pH meter (Adwa-AD8000), and ICP-OES, respectively.
Free full text: Click here
