Chitosan-alginate composite nanofiber membrane as well as preparation method and application thereof
A composite nanofiber, alginate technology, applied in textiles, papermaking, non-woven fabrics, etc., can solve the problems of fiber discontinuity, beading, spinning breakage, etc., and achieve uniform fiber diameter distribution and good mechanical properties. , the effect of simple operation
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Embodiment 1
[0033] Embodiment 1 proposes that a kind of fiber diameter is the chitosan-alginate composite nanofiber film of 70nm-100nm, and its preparation method comprises the steps:
[0034] (1) Dissolving alginate in the first solvent to obtain a first mixed solution with a mass concentration of 6%. Wherein, the first solvent is a solvent obtained by mixing glycerin and ethanol with a mass concentration of 4% at a volume ratio of 1:3.
[0035] (2) dissolving chitosan and gelatin in a second solvent to obtain a second mixed solution with a mass concentration of 1%. Wherein, the weight ratio of the alginate to the gelatin is 1:7, and the second solvent is a mixture of glacial acetic acid with a mass concentration of 1% and dilute hydrochloric acid with a mass concentration of 5% according to a volume ratio of 1:2 the resulting solvent.
[0036] (3) The first mixed solution is mixed with the second mixed solution to obtain a spinning stock solution, and the spinning stock solution is pa...
Embodiment 2
[0038] Embodiment 2 proposes that a kind of fiber diameter is the chitosan-alginate composite nanofiber film of 90nm-120nm, and its preparation method comprises the steps:
[0039] (1) Dissolving alginate in the first solvent to obtain a first mixed solution with a mass concentration of 12%. Wherein, the first solvent is a solvent obtained by mixing glycerin and ethanol with a mass concentration of 2% at a volume ratio of 1:1.
[0040] (2) dissolving chitosan and gelatin in a second solvent to obtain a second mixed solution with a mass concentration of 8%. Wherein, the weight ratio of the alginate to the gelatin is 1:2, and the second solvent is a mixture of glacial acetic acid with a mass concentration of 3% and dilute hydrochloric acid with a mass concentration of 1% according to a volume ratio of 1:6 the resulting solvent.
[0041] (3) The first mixed solution is mixed with the second mixed solution to obtain a spinning stock solution, and the spinning stock solution is p...
Embodiment 3
[0043] Embodiment 3 proposes that a kind of fiber diameter is the chitosan-alginate composite nanofiber film of 100nm-120nm, and its preparation method comprises the steps:
[0044] (1) Dissolving the alginate in the first solvent to obtain a first mixed solution with a mass concentration of 9%. Wherein, the first solvent is a solvent obtained by mixing glycerin and ethanol with a mass concentration of 3% at a volume ratio of 1:2.
[0045] (2) dissolving chitosan and gelatin in a second solvent to obtain a second mixed solution with a mass concentration of 4%. Wherein, the weight ratio of the alginate to the gelatin is 1:5, and the second solvent is a mixture of glacial acetic acid with a mass concentration of 2% and dilute hydrochloric acid with a mass concentration of 3% according to a volume ratio of 1:4 the resulting solvent.
[0046](3) The first mixed solution is mixed with the second mixed solution to obtain a spinning stock solution, and the spinning stock solution i...
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