Preparation method and application of skin regeneration aerogel type dressing
A skin repair and aerogel technology, applied in medical science, bandages, etc., can solve the problems of repeated spraying/smearing, unstable effect, cumbersome operation, etc., to help the wound mature, optimize appearance and function, improve The effect of repairing the mass
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Embodiment 1
[0044] The preparation method of a 2cm*2cm*2mm "sandwich type" collagen-graphene oxide loaded bFGF multilayer structure airgel dressing comprises the following steps:
[0045] (1) Take 20mg of type I collagen, add it to 1ml of 0.05M acetic acid solution, and ultrasonicate for 30min in a water bath at 35°C until the solution becomes a 2% w / v solution, which is recorded as solution A;
[0046] (2) Take 4 mg of graphene oxide and add it to 0.5 ml of deionized water to obtain a graphene oxide suspension. Place the graphene oxide suspension in an ultrasonic pulverizer and place it in an ice-water bath to vibrate for 1 hour until the graphite oxide is Alkene becomes microparticle sol B;
[0047] (3) Mix liquid A and liquid B at a ratio of 2:1 by volume, and ultrasonicate for 30 minutes in an ice-water bath to obtain a homogeneous colloidal solution of 1% w / v of collagen and 0.2% w / v of graphene oxide. Vacuumize and degas the colloidal solution, and cool it in a refrigerator at 4°C ...
Embodiment 2
[0054] A kind of diameter is 8mm, and the preparation method of the collagen-graphene oxide skin repairing aerogel that height is 2mm comprises the following steps:
[0055] (1) Take 20mg of type VI collagen, add it to 1ml of 0.05M acetic acid solution, and sonicate for 20min in a water bath at 35°C until the solution becomes a 2% w / v solution, which is recorded as solution A;
[0056] (2) Take 16 mg of graphene oxide and add it to 0.5 ml of deionized water to obtain a graphene oxide suspension. Place the graphene oxide suspension in an ultrasonic pulverizer and place it in an ice-water bath to vibrate for 30 minutes until the graphite oxide Alkene becomes microparticle sol B;
[0057] (3) Mix liquids A and B at a volume ratio of 5:1, ultrasonically degas the homogeneous colloidal solution for 30 minutes in an ice-water bath, and place it in a refrigerator at 4°C for 12 hours until it becomes a colloidal mixture C ;
[0058] (4) Pour the colloidal mixture C into a cylindrica...
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