Inorganic-organic hybrid three-dimensional interpenetrating network hydrogel materials and preparation method and application thereof
A technology of interpenetrating network and organic hybridization, which is applied in the field of inorganic-organic hybrid three-dimensional interpenetrating network hydrogel materials and its preparation, and can solve problems such as side effects infection, sudden death, secondary injury, etc.
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Embodiment 1
[0055] Prepare graphene oxide aqueous solution by following formula:
[0056] ①At room temperature, while stirring in 70 mL of concentrated sulfuric acid, add 3 g of graphite powder spoon by spoon;
[0057] ② Transfer the mixture to an ice bath, add 1.5 g of sodium nitrate spoon by spoon, and stir for 15 min;
[0058] ③ Continue to slowly add 9 g of potassium permanganate in the ice bath, stir for 15 min, then transfer to an oil bath at 36 °C, and react for 1 h;
[0059] ④ Slowly add 150 mL of water via dropper and stir for 15 min;
[0060] ⑤ After stirring, heat up to 90 °C, react until the solution turns yellow, transfer to a 2000 mL large beaker, add 500 mL of water and stir for 30 min;
[0061] ⑥ Add 20 mL of hydrogen peroxide with a mass fraction of 30%, let stand overnight, and settle naturally;
[0062] 7. incline supernatant liquid, be pickling 2 times with the dilute hydrochloric acid solution of 5% with mass fraction;
[0063] ⑧Wash twice with distilled water;
...
Embodiment 2
[0067] Graphene oxide reinforced interpenetrating network hydrogels were prepared by the following formula:
[0068] ① Dissolve 0.833 g of acrylamide monomer in 2.5 mL of graphene oxide solution with a concentration of 9 mg / mL, and ultrasonically homogenize it in the ice-water mixture;
[0069] ②Take 400 μL of 1 mol / L sodium hydroxide solution, 200 μL of 30 mg / mL polyamide-amine dendrimer solution, and 80 μL of 5 mg / mL N,N'- The methylenebisacrylamide solution was added to the mixed solution in the previous step one after another, and after each addition of materials, it was ultrasonically uniform in the ice-water mixture to obtain the original solution of the interpenetrating network hydrogel;
[0070] ③ Add 100 μL ammonium persulfate solution with a concentration of 250 mg / mL to the stock solution of the interpenetrating network hydrogel, stir for 30 s, then add 200 μL freshly prepared gluconolactone solution with a concentration of 200 mg / mL, stir and mix evenly, After...
Embodiment 3
[0073] Injectable graphene oxide-enhanced interpenetrating network hydrogels were prepared by the following formulation:
[0074] ① Dissolve 0.833 g of acrylamide monomer in 1.25 mL of graphene oxide solution with a concentration of 18 mg / mL and 1.25 mL of diatrizoate with a mass fraction of 76% (based on the total amount of diatrizoate and sodium diatrizoate). In the mixed solution of amine injection, ultrasonically homogenize in the ice-water mixture;
[0075] ②Take 400 μL of 1 mol / L sodium hydroxide solution, 200 μL of 30 mg / mL polyamide-amine dendrimer solution, and 80 μL of 5 mg / mL N,N'- Add the methylenebisacrylamide solution to the mixed solution in the previous step one after another, and after each addition of the material, ultrasonically homogenize it in the ice-water mixture to obtain the injection-type interpenetrating network hydrogel stock solution;
[0076] ③Add 100 μL ammonium persulfate solution with a concentration of 250 mg / mL to the stock solution of t...
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