Preparation method and process for antibacterial modification of ceramic whiskers
A ceramic whisker and modification technology, which can be applied in the direction of local antibacterial agents, resistance to vector-borne diseases, medical preparations containing active ingredients, etc., can solve the problems of insignificant enhancement and inability to increase material strength, etc.
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[0029] Preparation method of the present invention:
[0030] A. Dissolve the zinc salt and complex compound with a mass ratio of 1:0 to 4:1 in absolute ethanol with stirring at 70°C to make a clear solution with a concentration of 0.04 to 0.08mol / L. This product is I;
[0031] B. The hydroxyapatite whiskers are evenly dispersed in the ethanol solution by ultrasonic vibration, and the product is II;
[0032] C. Under stirring, slowly add the product I dropwise to the product II, adjust the pH value to 4.8-8.2 with ammonia water, react at a constant temperature of 37°C-70°C for 4-8 hours, and then sonicate for 10-60 seconds; heat up to Evaporate the solvent to dryness at 78°C to 80°C, and place it in a thermostat to dry completely. The product is III;
[0033] D. Put the product III in an airtight container to roast, raise the temperature to 800°C-900°C at a rate of 2-5°C / min and keep it warm for 0.5-2 hours, then slowly cool down to room temperature with the container to obtai...
Embodiment 1
[0038] A. Dissolve zinc acetate in absolute ethanol with stirring at 70°C to make a clear solution with a concentration of 0.06mol / L;
[0039] B. Hydroxyapatite whiskers are evenly dispersed in ethanol solution by ultrasonic vibration;
[0040] C. Under stirring, slowly add the clear solution formed in step A into the dispersion formed in step B, adjust the pH to 4.8 with ammonia water, react at a constant temperature of 37°C for 6 hours, then ultrasonicate for 15 seconds, and raise the temperature to 78°C-80°C Evaporate the solvent to dryness at ℃, and place it in a constant temperature box to dry completely; put the product in a closed container and roast at a heating rate of 2°C to 5°C to 800°C and keep it warm for 1 hour, then slowly cool down to room temperature with the container, and a well-modified product is obtained. ZnO-hydroxyapatite whiskers.
[0041] The results of transmission electron microscopy analysis are shown in figure 1 , a small amount of zinc oxide ba...
Embodiment 2
[0043] A. Dissolve zinc acetate in absolute ethanol with stirring at 70°C to make a clear solution with a concentration of 0.06mol / L;
[0044] B. Hydroxyapatite whiskers are evenly dispersed in ethanol solution by ultrasonic vibration;
[0045] C. Under stirring, slowly drop the clear liquid formed in step A into the dispersion liquid formed in step B, adjust the pH to 6.4 with ammonia water, react at a constant temperature of 37°C for 6 hours, then ultrasonicate for 15 seconds, and raise the temperature to 78°C-80°C Evaporate the solvent to dryness at ℃, and place it in a constant temperature box to dry completely; put the product in a closed container and roast at a heating rate of 2°C to 5°C to 800°C and keep it warm for 1 hour, then slowly cool down to room temperature with the container, and a well-modified product is obtained. ZnO-hydroxyapatite whiskers.
[0046] The results of transmission electron microscopy analysis are shown in figure 2 , the measured diameter of...
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