A kind of preparation method of oil-based hydroxyapatite colloidal liquid crystal
An oil-based hydroxyapatite and colloidal technology, which is applied in the direction of liquid crystal materials, chemical instruments and methods, phosphorus compounds, etc., to achieve the effects of easy implementation, simple synthesis process, and low cost
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Embodiment 1
[0031] 1) Add 24mL of 0.83mol / L calcium nitrate aqueous solution and 48mL of ethanol, 0.038mol of oleic acid and 0.025mol of ethylenediamine into a three-necked flask to mix, and stir to obtain a uniform solution; under stirring conditions, add 0.5mol / L of trisodium phosphate 24mL of aqueous solution, slowly drip into the above solution, and continue to stir for 10min after the addition is complete;
[0032] 2) The mixed solution obtained in step 1) is heated to 80°C and reacted for 6 hours, and then naturally cooled to room temperature to obtain a reaction solution;
[0033] 3) Use a high-speed centrifuge to centrifuge the reaction solution obtained in step 2) to obtain the precipitate. Use anhydrous ethanol and cyclohexane to alternately centrifuge and wash 3 times to remove electrolytes and excess fatty acids in the system to obtain oil-soluble hydroxyapatite nanoparticles ;
[0034] The X-ray diffraction pattern of oil-soluble hydroxyapatite nanoparticles is shown in figure 1 ,F...
Embodiment 2
[0038] 1) Add 24mL of 0.83mol / L calcium chloride aqueous solution and 48mL of ethanol, 0.038mol of oleic acid and 0.025mol of ethylenediamine into a three-necked flask to mix, and stir to obtain a uniform solution; under stirring conditions, add 0.5mol / L of triphosphate 24mL of potassium aqueous solution was slowly added dropwise to the above solution, and stirring was continued for 10 minutes after the addition was completed;
[0039] 2) The mixed solution obtained in step 1) is heated to 80°C and reacted for 3 hours, and then naturally cooled to room temperature to obtain a reaction solution;
[0040] 3) Use a high-speed centrifuge to centrifuge the reaction solution obtained in step 2) to obtain a precipitate, and use anhydrous ethanol and toluene to alternately centrifuge and wash 3 times to remove electrolytes and excess fatty acids in the system to obtain oil-soluble hydroxyapatite nanoparticles;
[0041] Figure 5 This is a macro photo of the prepared dispersion of oil-soluble...
Embodiment 3
[0045] 1) Add 24mL of 0.83mol / L calcium acetate aqueous solution and 48mL of ethanol, 0.038mol of oleic acid and 0.025mol of ethylenediamine into a three-necked flask and mix, and stir to obtain a uniform solution; under stirring conditions, add 0.5mol / L of triammonium phosphate 24mL of aqueous solution, slowly drop into the above solution, continue to stir for 10 minutes after the addition is complete;
[0046] 2) The mixed solution obtained in step 1) is heated to 50°C and reacted for 12 hours, and then naturally cooled to room temperature to obtain a reaction solution;
[0047] 3) Use a high-speed centrifuge to centrifuge the reaction solution obtained in step 2) to obtain the precipitate, and use anhydrous ethanol and styrene to alternately centrifuge and wash 3 times to remove electrolyte and excess fatty acid in the system to obtain oil-soluble hydroxyapatite nanoparticles;
[0048] Figure 7 This is a macro photo of the prepared dispersion of oil-soluble hydroxyapatite nanopar...
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