Graphene composite material with anti-photooxidation enhancement effect and preparation method thereof
An enhancement, anti-photooxidation technology, applied in cosmetic preparations, cosmetic preparations, preparations for skin care, etc., can solve the problems of poor dispersion of graphene materials, difficult modification of graphene, easy agglomeration, etc. The effect of absorption efficiency, good biocompatibility and good environmental protection
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Embodiment 1
[0049] (1) Ultrasonic disperse GO powder in a certain amount of pure water for 5 min to obtain a GO dispersion, then add a certain amount of N-(2-hydroxyethyl) acrylamide and ethanol, and mix with magnetic stirring for 2 min. A mixed solution was obtained; the concentration of GO in the mixed solution was 0.5 mg / mL, the concentration of N-(2-hydroxyethyl)acrylamide was 5 wt%, and the concentration of ethanol was 10%;
[0050] (2) Take 20mL of the mixture obtained in step (1) and put it into an irradiation tube, insert the ventilation tube into the mixture and bubble it with nitrogen for 10 minutes to remove the oxygen in the mixture; seal it and send it to the cobalt-60 irradiation chamber for irradiation irradiated, the absorbed dose was 18 kGy, and the dose rate was 3 kGy / hour; after the irradiation was completed, the resulting mixture was ultrasonically dispersed in 60 mL of water for 10 min to obtain a dispersion;
[0051] (3) The dispersion in step (2) was filtered with a...
Embodiment 2
[0053] (1) Ultrasonic disperse GO powder in a certain amount of pure water for 5 min to obtain a GO dispersion, then add a certain amount of polyvinyl alcohol (PVA) solution and isopropanol, and stir magnetically for 2 min to obtain a mixed solution; the concentration of GO in the mixed solution is 0.5 mg / mL, the concentration of PVA is 1 wt%, and the concentration of isopropanol is 30%;
[0054] (2) Take 20mL of the mixture obtained in step (1) and put it into an irradiation bag. After the air in the bag is simply squeezed out, it is heat-pressed and sealed and sent to the electron accelerator irradiation room for irradiation. The absorbed dose is 100 kGy, and the dose rate is 100 kGy / hour; after the irradiation is completed, ultrasonically disperse the resulting mixture in 60mL water for 10min to obtain a dispersion;
[0055] (3) The dispersion liquid in step (2) was filtered with a PVDF microporous filter membrane with a pore size of 0.22 μm, and the filter cake was collect...
Embodiment 3
[0057] (1) Ultrasonic disperse GO powder in a certain amount of pure water for 5 min to obtain a GO dispersion, then add a certain amount of ethanol, and magnetically stir and mix for 2 min to obtain a mixed solution; the concentration of GO in the mixed solution is 0.5 mg / mL, ethanol concentration 30%;
[0058] (2) Take 20mL of the mixture obtained in step (1) and put it into an irradiation bag. After the air in the bag is simply squeezed out, it is heat-pressed and sealed and sent to the electron accelerator irradiation room for irradiation. The absorbed dose is 100 kGy, and the dose rate is 100 kGy / hour; after the irradiation is completed, ultrasonically disperse the resulting mixture in 60mL water for 10min to obtain a dispersion;
[0059] (3) The dispersion in step (2) is filtered through a PVDF microporous membrane with a pore size of 0.22 μm, and the filter cake is collected to obtain a graphene-based composite material.
[0060] The samples obtained in the above examp...
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