Nano-silver-containing sodium alginate based antibacterial medical dressing and preparation method thereof
A technology of sodium alginate and nano-silver, applied in medical science, absorbent pads, bandages, etc., can solve the problems of poor antibacterial performance and wettability, poor air permeability and mechanical properties, and achieve high bactericidal activity and excellent hygroscopic performance , good stability
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[0026] Specific implementation mode 1: A sodium alginate-based antibacterial medical dressing containing nano-silver in this embodiment is made of nano-silver particles and an interpenetrating network film; wherein, the interpenetrating network film is made of sodium alginate and high The molar ratio of the said nano silver particles to sodium alginate is 1:10-50; the molar ratio of nano silver particles to the polymer is 1-10:60.
[0027] The dressing of this embodiment has been subjected to a morphological observation test, and the pore size of the dressing is in the range of 100-800 microns.
[0028] The dressing of this embodiment has good toughness and can be bent arbitrarily so as to be suitable for wounds in different parts.
[0029] When the antibacterial medical dressing of this embodiment is in contact with the wound, the released calcium ions can induce platelet activation, produce hemostatic growth factors, play the role of hemostasis and accelerate wound healing, quickly...
Example Embodiment
[0036] Specific embodiment two: this embodiment is different from specific embodiment one in that the polymer is a mixture of one or more of gelatin, polyvinyl alcohol or chitosan in any ratio. Others are the same as the first embodiment.
Example Embodiment
[0037] Specific embodiment three: this embodiment is different from specific embodiment one or two in that the molar ratio of nano silver particles to sodium alginate is 1 to 5:10. Others are the same as the first or second embodiment.
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