Preparation method and application of nanocomposite of silver, chitosan and/or derivative thereof
A technology of chitosan derivatives and nanocomposites, which is applied in the direction of drug combinations, medical preparations with no active ingredients, medical preparations containing active ingredients, etc., can solve the problems of preparation methods and applications that have not been reported, and achieve Uniform particle size effect
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Embodiment 1
[0053] A kind of silver, chitosan nanocomposite, preparation method step is as follows:
[0054] (1) 10g chitosan is ground into fine powder;
[0055] (2) 0.005g silver nitrate is ground into fine powder;
[0056] (3) Mix chitosan fine powder and silver nitrate fine powder, fully grind for 1 hour;
[0057] (4) Add 0.005 g of ascorbic acid, and continue to fully grind for 2 hours to obtain a silver-chitosan nanocomposite (sample 1) with a silver particle size of 1-100 nm.
Embodiment 2
[0059] A nanocomposite of silver and chitosan derivatives, the preparation method steps are as follows:
[0060] (1) 10g carboxymethyl chitosan is ground into fine powder;
[0061] (2) 0.005g silver nitrate is ground into fine powder;
[0062] (3) Carboxymethyl chitosan fine powder and silver nitrate fine powder were mixed, fully ground for 2 hours;
[0063] (4) Add 0.005 g of glucose and continue to grind thoroughly for 2.5 hours to obtain a silver-chitosan derivative nanocomposite (sample 2) with a silver particle size of 1-100 nm.
Embodiment 3
[0065] A nanocomposite of silver, chitosan and chitosan derivatives, the preparation method steps are as follows:
[0066] (1) 7g chitosan and 3g hydroxypropyl chitosan are ground into fine powder;
[0067] (2) 0.005g silver nitrate is ground into fine powder;
[0068] (3) Chitosan and hydroxypropyl chitosan fine powder are mixed with silver nitrate fine powder, fully ground for 2 hours;
[0069] (4) Add 0.005 g of N-acetylglucosamine and continue to grind thoroughly for 6 hours to obtain silver, chitosan and chitosan derivative nanocomposites with a silver particle size of 1-100 nm.
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