A kind of preparation method of xanthan gum/chitosan nanofiber film
A technology of chitosan nano and xanthan gum, which is applied in fiber treatment, filament/thread forming, textile and paper making, etc., to achieve high encapsulation efficiency, strong implementability, and the effect of reducing adhesion performance
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Embodiment 1
[0031] A preparation method of xanthan gum / chitosan nanofiber membrane, comprising the steps of:
[0032] (1) Preparation of electrospinning solution:
[0033] First, 1 g of xanthan gum (Mw=20 million) and 2 g (Mw=200,000) of chitosan were dissolved in 100 mL of formic acid solution, and then magnetically stirred vigorously at room temperature for 20 hours to obtain a viscoelastic gel solution. Then 1 g of curcumin was added to the above gel solution, mixed and stirred to dissolve for 20 minutes to obtain a homogeneous solution. The mixed solution was ultrasonically treated for 10 min at 40% strength of a 1000W ultrasonic instrument to prepare a xanthan gum-chitosan-curcumin nanocomposite solution.
[0034] (2) Manufacture of xanthan gum / chitosan nanofiber membrane:
[0035] The solution for preparing the composite was injected into a 10 mL plastic syringe with a 21-G stainless steel needle and connected to a syringe pump. The spinning voltage is 20KV, the propulsion speed ...
Embodiment 2
[0038] A preparation method of xanthan gum / chitosan nanofiber membrane, comprising the steps of:
[0039] (1) Preparation of electrospinning solution:
[0040] First, 0.5g of xanthan gum (Mw=10 million) and 4g (Mw=400,000) of chitosan were dissolved in 100mL of a mixed solution of formic acid and phosphoric acid, and then magnetically stirred vigorously at room temperature for 40 hours to obtain a viscoelastic gel solution . Then 4g of curcumin was added to the above gel solution, mixed and stirred to dissolve for 60 minutes to obtain a homogeneous solution. The mixed solution was sonicated for 30 min at 40% strength of a 1000W ultrasonic instrument to prepare a xanthan gum-chitosan-curcumin nanocomposite solution.
[0041] (2) Manufacture of xanthan gum / chitosan nanofiber membrane:
[0042] The solution for preparing the composite was injected into a 10 mL plastic syringe with a 21-G stainless steel needle and connected to a syringe pump. The spinning voltage is 30KV, the...
Embodiment 3
[0044] A preparation method of xanthan gum / chitosan nanofiber membrane, comprising the steps of:
[0045] (1) Preparation of electrospinning solution:
[0046] First, 0.8g of xanthan gum (Mw=5 million) and 10g (Mw=500,000) of chitosan were dissolved in 100mL of formic acid and phosphoric acid mixed solution, and then magnetically stirred vigorously at room temperature for 30 hours to obtain a viscoelastic gel solution . Then 5g of curcumin was added to the above gel solution, mixed and stirred to dissolve for 10 minutes to obtain a homogeneous solution. The mixed solution was sonicated for 5 min at 40% strength of a 1000W ultrasonic instrument to prepare a xanthan gum-chitosan-curcumin nanocomposite solution.
[0047] (2) Manufacture of xanthan gum / chitosan nanofiber membrane:
[0048] The solution for preparing the composite was injected into a 10 mL plastic syringe with a 21-G stainless steel needle and connected to a syringe pump. The spinning voltage is 40KV, the propu...
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