Microneedle patch capable of generating heat and preparation method and application thereof
A technology of microneedle stickers and microneedle arrays, applied in the directions of microneedles, medical preparations without active ingredients, and medical preparations containing active ingredients, etc., can solve the problem of inability to control drug release and achieve excellent light response Sex, the effect of eliminating white fat
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[0031] (1) Preparation of m-HA: Dissolve 2 g of hyaluronic acid in 100 ml of deionized water, add 1.6 ml of methacrylic anhydride dropwise, then use NaoH aqueous solution to adjust the pH value of the mixed liquid to between 8 and 9, and After stirring at 4°C for 24 hours, it was added to pure acetone (polymer:acetone ≈ 1:10, volume ratio), and a milky white precipitate was obtained, which was taken out and washed three times with ethanol. The product was dissolved in deionized water, the solution was dialyzed against deionized water for 2 days, and m-HA was obtained by lyophilization.
[0032] (2) Synthesis of black phosphorus nanosheets: Weigh 2g of NaOH solid into a beaker, add 80ml of N-methylpyrrolidone, ultrasonicate for 5min in a water bath (0-4°C), let stand for 3min after the end, take the supernatant and mix with 20mg black phosphorus powder mixed. Place the mixed solution in a water bath for ultrasonication for 12 hours. After the end, put the centrifuge tube into ...
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