A chitin nano whisker/hydroxyapatite composite artificial bone material and its preparation method and application in 3D printing
A technology of chitin nanocrystals and hydroxyapatite, which is applied in the medical field to achieve the effects of anticoagulant wound healing, good bone conduction, and promoting wound healing
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[0029] Below in conjunction with accompanying drawing and specific steps the present invention is described in further detail, see figure 1 , the invention discloses a preparation method of chitin nano-whiskers / hydroxyapatite composite artificial bone material. The preparation process specifically includes the following steps:
[0030] Step 1, preparing colloidal chitin nano whiskers
[0031] Soak 2g~5g of chitin in 100ml of hydrochloric acid, the concentration of hydrochloric acid is 3mol / L, put it in a Erlenmeyer flask, heat it to boiling under mechanical stirring, and react for 2~4 hours to form a gelatinous product; in the gelatinous product Add water to ensure that the amount of water added can completely submerge the colloidal product to dilute the colloidal product. Stir the mixture evenly to form a mixed solution; centrifuge the mixed solution at a speed of 5000-9000r / min for 6-10 minutes, and then pour it out supernatant, and repeat the centrifugation once; colloidal c...
Embodiment 1
[0049] Step 1, preparing colloidal chitin nano whiskers
[0050] Soak 2g of chitin in 100ml of hydrochloric acid, the concentration of hydrochloric acid is 3mol / L, put it in an Erlenmeyer flask, heat it to boiling under mechanical stirring, and react for 4 hours to form a gelatinous product; add water to the gelatinous product to dilute Colloidal product, after the mixture is stirred evenly, a mixed solution is formed; the mixed solution is centrifuged at a speed of 5000r / min for 10min, then the supernatant is poured off, and the above centrifugation is repeated once; after centrifugation, a colloidal chitin nanowhiskers.
[0051] Step 2, remove the acidic substances in the colloidal chitin nano whiskers
[0052] Put the chitin nano-whiskers that step 1 obtains into the dialysis bag, carry out the first dialysis, the dialysis time is 8h, the consumption of dialysate is 50 times of chitin nano-whiskers, and the dialysate is selected tap water; Ionized water is carried out sec...
Embodiment 2
[0066] Step 1, preparing colloidal chitin nano whiskers
[0067] Soak 5g of chitin in 100ml of hydrochloric acid, the concentration of hydrochloric acid is 3mol / L, put it in an Erlenmeyer flask, heat it to boiling under mechanical stirring, and react for 3 hours to form a gelatinous product; add water to the gelatinous product to dilute Colloidal product, after the mixture is stirred evenly, a mixed solution is formed; the mixed solution is centrifuged at a speed of 9000r / min for 6min, then the supernatant is poured off, and the above centrifugation is repeated once; after centrifugation, a colloidal chitin nanowhiskers.
[0068] Step 2, remove the acidic substances in the colloidal chitin nano whiskers
[0069] Put the chitin nano-whiskers that step 1 obtains into the dialysis bag, carry out the first dialysis, the dialysis time is 12h, the consumption of the dialysate is 20 times of the chitin nano-whiskers, and the dialysate is selected deionized water; Carry out second d...
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