Micron-sized super-long calcium-based wormlike micelle template and hydroxyapatite whisker
A technology of hydroxycalcium apatite and calcium-based worms, which is applied in the fields of phosphorus compounds, inorganic chemistry, non-metallic elements, etc., can solve the problems of low whisker size consistency, unstable process window, and complicated process of HAP, and achieve Excellent mechanical properties, high dimensional consistency, to achieve the design effect
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Embodiment 1
[0037] At room temperature, in 0.1mol / L calcium chloride aqueous solution, add stearic acid with calcium ion molar ratio of 1:1, stir well, then add fatty amine with calcium ion molar ratio of 0.2:1, and stir until the solution becomes Turbidity and stable turbidity; at this time, use a peristaltic pump to drop polymethacrylic acid with a molar ratio of 0.1:1 to calcium ions, and then add 0.8mol / L sodium chloride aqueous solution dropwise until the viscosity changes suddenly and reaches After 35000mPa s, add 0.5mol / L potassium phosphate aqueous solution dropwise, and stir for 30 minutes to obtain a micron-sized ultra-long calcium-based worm-like micelle template, and add the micron-sized ultra-long calcium-based worm-like micelle template The reaction kettle is lined and sealed in a steel autoclave, and taken out after reacting at 180°C for 12 hours to obtain micron-sized ultra-long hydroxy calcium apatite whiskers.
Embodiment 2
[0039] At room temperature, in a 0.2mol / L calcium dihydrogen phosphate aqueous solution, add lauric acid with a calcium ion molar ratio of 0.8:1, stir evenly and add polyoxyethylene alkylamide with a calcium ion molar ratio of 0.15:1, Stir until the solution becomes turbid and the turbidity is stable; at this time, use a peristaltic pump to drop sodium tripolyphosphate with a molar ratio of 0.2:1 to calcium ions, and then add 0.6mol / L sodium carbonate aqueous solution dropwise until the viscosity changes suddenly , and after reaching 42000mPa·s, add 1.0mol / L ammonium dihydrogen phosphate aqueous solution dropwise, and stir for 40min to obtain the micron-sized ultra-long calcium-based worm-like micelle template, and add the micron-sized ultra-long calcium-based worm-like micelle template into a three-necked flask, sealed and placed in a 90°C water bath for 24 hours of reaction, and then taken out to obtain micron-sized ultra-long hydroxycalcium apatite whiskers.
Embodiment 3
[0041] At room temperature, in 0.8mol / L calcium bicarbonate aqueous solution, add the palmitic acid that is 0.6:1 with the molar ratio of calcium ion, after stirring evenly, add the fatty acid polyoxyethylene ester that is 0.3:1 with the molar ratio of calcium ion, stir Until the solution becomes turbid and shows that the turbidity is stable; at this time, use a peristaltic pump to drip aminotriacetic acid with a calcium ion molar ratio of 0.05:1, and then add 0.2mol / L sodium fluoride aqueous solution dropwise until the viscosity changes suddenly. And after reaching 101000mPa·s, add 1.2mol / L sodium polyphosphate aqueous solution dropwise, stir for 40min to obtain micron-scale ultra-long calcium-based worm-like micelle template, add micron-scale ultra-long calcium-based worm-like micelle template to poly Put it in the inner liner of the tetrafluoroethylene reaction kettle, seal it, heat it to 240° C. for 24 hours and take it out after reacting for 24 hours to obtain micron-sized...
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