Preparation method for antibiosis ultraviolet prevention silk fibroin nanofiber membrane
A technology of nanofiber membrane and silk fibroin, which is applied in the field of nanofiber membrane blended with nanomaterials and silk fibroin and its preparation, and achieves the effects of simple preparation process, satisfactory production and application, and low production cost
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Embodiment 1
[0019] 1) Dissolve a certain amount of nano-ZnO in 20 ml of PVP-containing aqueous solution to make the molar ratio 1:1, and react for 4 hours under ultrasonic conditions. After the reaction, the solution is centrifuged, washed, and dried to obtain surface-modified nano ZnO.
[0020] 2) Put silkworm cocoons into a sodium carbonate solution with a mass percentage concentration of 0.5% and stir, boil for 60 minutes to remove sericin on the surface of silkworm cocoons, wash with water, and dry at 60 °C to prepare silk fibroin fibers. The dried silk fibroin The mixed solution of fiber and calcium chloride, water and ethanol with a molar ratio of 1:8:2 is dissolved at 75 °C to form a silk fibroin solution, and the ethanol and calcium chloride in the solution are removed by dialysis, and silk is obtained by filtration. fibroin solution, and then freeze-dried to obtain silk fibroin.
[0021] 3) According to the weight ratio of 1:0.1:0.01, water, silk fibroin, and PVP surface-modifie...
Embodiment 2
[0025] 1) A certain amount of nano-TiO 2 , dissolved in 20 ml of aqueous solution containing Triton X-100 so that the molar ratio was 1:5, and reacted for 4 hours under ultrasonic conditions. After the reaction, the solution was centrifuged, washed, and dried to obtain surface-modified nano-TiO 2 .
[0026] 2) Put silkworm cocoons into a sodium carbonate solution with a mass percentage concentration of 0.5% and stir, boil for 60 minutes to remove sericin on the surface of silkworm cocoons, wash with water, and dry at 60 °C to prepare silk fibroin fibers. The dried silk fibroin The mixed solution of fiber and calcium chloride, water and ethanol with a molar ratio of 1:8:2 is dissolved at 75 °C to form a silk fibroin solution, and the ethanol and calcium chloride in the solution are removed by dialysis, and silk is obtained by filtration. fibroin solution, and then freeze-dried to obtain silk fibroin.
[0027] 3) Nano-TiO surface modified with water, silk fibroin and Triton X...
Embodiment 3
[0030] 1) Dissolve a certain amount of nano-ZnO in 20 ml of PVA-containing aqueous solution to make the molar ratio 1:0.5, and react for 4 hours under ultrasonic conditions. After the reaction, the solution is centrifuged, washed, and dried to obtain surface-modified nano ZnO.
[0031] 2) Put silkworm cocoons into a sodium carbonate solution with a mass percentage concentration of 0.5% and stir, boil for 60 minutes to remove sericin on the surface of silkworm cocoons, wash with water, and dry at 60 °C to prepare silk fibroin fibers. The dried silk fibroin The mixed solution of fiber and calcium chloride, water and ethanol with a molar ratio of 1:8:2 is dissolved at 75 °C to form a silk fibroin solution, and the ethanol and calcium chloride in the solution are removed by dialysis, and silk is obtained by filtration. fibroin solution, and then freeze-dried to obtain silk fibroin.
[0032]3) Hexafluoroisopropanol, silk fibroin and PVA surface-modified nano-ZnO were mixed accordi...
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