Preparation method of silk fibroin/graphene oxide high-concentration blended aqueous solution
A technology of silk fibroin and regenerated silk fibroin, which is applied in the field of preparation of silk fibroin/graphene oxide high-concentration blended aqueous solution, can solve problems such as graphene oxide agglomeration, and achieve good quality and broad application prospects
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[0029] Example 1
[0030] Use 0.5% Na 2 CO 3 The aqueous solution degummed the cocoons, and then dissolved them with a 9.0 mol / L LiBr aqueous solution. After dilution, centrifuge with a high-speed centrifuge. After suction filtration, the silk fibroin solution was placed in a cellulose dialysis bag, and after sealing, it was immersed in deionized water for dialysis at a temperature of 6°C, dialysis time was 72 hours, and a water change cycle was 4 hours. Then, at a temperature of 6°C, the regenerated silk fibroin aqueous solution was concentrated to a mass percentage of 10% using the wind speed method. The graphene oxide aqueous solution with a concentration of 0.5 mg / mL is subjected to ultrasonic dispersion treatment; then the graphene oxide aqueous solution is added to the regenerated silk fibroin aqueous solution according to the ratio of graphene oxide to silk fibroin mass ratio of 1:200, and Shake well. A calcium chloride aqueous solution with a molar concentration of 1.5...
Example Embodiment
[0031] Example 2
[0032] Use 0.5% Na 2 CO 3 The aqueous solution degummed the cocoons, and then dissolved them with an 8.5mol / L LiBr aqueous solution. After dilution, centrifuge with a high-speed centrifuge. After suction filtration, the silk fibroin solution was placed in a cellulose dialysis bag, and after sealing, it was immersed in deionized water for dialysis at a temperature of 6°C, dialysis time was 72 hours, and a water change cycle was 4 hours. Then, at a temperature of 6°C, the regenerated silk fibroin aqueous solution was concentrated to a mass percentage of 20% using the wind speed method. The graphene oxide aqueous solution with a concentration of 0.5mg / ml is subjected to ultrasonic dispersion treatment, and then the graphene oxide aqueous solution is added to the regenerated silk fibroin aqueous solution according to the mass ratio of graphene oxide to silk fibroin of 1:500, and Shake well. A calcium chloride aqueous solution with a molar concentration of 1.5 mo...
Example Embodiment
[0033] Example 3
[0034] Use 1.0% Na by mass percentage 2 CO 3 The aqueous solution degummed the cocoons, and then dissolved them with a 9.0 mol / L LiBr aqueous solution. After dilution, centrifuge with a high-speed centrifuge. After suction filtration, the silk fibroin solution was placed in a cellulose dialysis bag, and after sealing, it was immersed in deionized water for dialysis at a temperature of 7°C, a dialysis time of 72 hours, and a water change cycle of 4 hours. Then, at a temperature of 7°C, the regenerated silk fibroin aqueous solution was concentrated to a mass percentage of 30% using the wind speed method. The graphene oxide aqueous solution with a concentration of 3 mg / ml is subjected to ultrasonic dispersion treatment, and then the graphene oxide aqueous solution is added to the regenerated silk fibroin aqueous solution according to the ratio of graphene oxide to silk fibroin mass ratio of 1:10000. uniform. A calcium chloride aqueous solution with a molar conc...
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