A kind of preparation method of calcium carbonate microspheres
A technology of calcium carbonate and microspheres, applied in the direction of calcium carbonate/strontium/barium, medical preparations of non-active ingredients, pharmaceutical formulas, etc., can solve the complex synthesis process of calcium carbonate microspheres, cumbersome calcium carbonate microsphere methods, Problems such as poor conveying capacity, to achieve the effect of low cost, controllable shape and low consumption
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Embodiment 1
[0017] A preparation method of calcium carbonate microspheres, the steps are as follows:
[0018] 1. Prepare 50mL 0.1moL·L separately -1 of calcium chloride and sodium carbonate aqueous solution, and then prepare 10 mL of molar mass concentration of 10 mmol L L -1 of sodium dodecyl sulfonate aqueous solution and 5 mL of polyethyleneimine aqueous solution with a mass percentage concentration of 1%.
[0019] 2. Pour the prepared calcium chloride aqueous solution, sodium dodecyl sulfonate aqueous solution and polyethyleneimine aqueous solution into a 250ml three-necked round-bottomed flask; then place the round-bottomed flask in the ultrasonic instrument and set up a stirring device , and mechanically stirred at 800r / min for 0.5 hours.
[0020] 3. The prepared 50mL 0.1moL·L -1 The sodium carbonate aqueous solution was quickly poured into a 250 ml three-necked round-bottomed flask, and stirred at the original stirring speed in a sonicator for 2 hours. Control the temperature a...
Embodiment 2
[0024] A preparation method of calcium carbonate microspheres, the steps are as follows:
[0025] 1. Prepare 50mL 0.05moL·L separately -1 of calcium chloride and sodium carbonate aqueous solution, and then prepare 10 mL of molar concentration of 15 mmol L L -1 of sodium dodecyl sulfonate aqueous solution and 5 mL of polyethyleneimine aqueous solution with a mass percentage concentration of 2%.
[0026] 2. Pour the prepared calcium chloride aqueous solution, sodium dodecyl sulfonate aqueous solution and polyethyleneimine aqueous solution into a 250ml three-necked round-bottomed flask. The round-bottomed flask was then placed in a sonicator, a stirring device was set up, and mechanical stirring was performed at 800 r / min, and the reaction was carried out for 0.5 hour.
[0027] 3. The prepared 50mL 0.05moL·L -1 The sodium carbonate aqueous solution was quickly poured into a 250 ml three-necked round-bottomed flask, and stirred at the original stirring speed in a sonicator for ...
Embodiment 3
[0031] A preparation method of calcium carbonate microspheres, the steps are as follows:
[0032] 1. Prepare 50mL 0.1moL·L -1 of calcium chloride and sodium carbonate aqueous solution, and then prepare 10 mL of molar concentration of 10 mmol L L -1 The sodium dodecyl sulfate aqueous solution and 5mL mass percent concentration of 2% polyacrylamide aqueous solution,
[0033] 2. Pour the calcium chloride aqueous solution, the sodium lauryl sulfate aqueous solution and the polyvinylamide aqueous solution together into a 250ml three-neck round bottom flask. The round-bottomed flask was then placed in a sonicator, a stirring device was set up, and mechanical stirring was performed at 800 r / min, and the reaction was carried out for 0.5 hour.
[0034] 3. The prepared 50mL 0.1moL·L -1 The sodium carbonate aqueous solution was quickly poured into a 250 ml three-necked round-bottomed flask, and stirred at the original stirring speed in a sonicator for 2 hours. Control the temperature...
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