A kind of preparation method of catalytic nanofiber membrane
A technology of nanofiber membrane and composite nanofiber, which is applied in the field of air purification, can solve the problems of lowering the effective utilization rate and reducing the spinnability of the original spinning solution, so as to reduce the production process and cost, weaken the competitive adsorption effect, and improve the resistance The effect of wet performance
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Embodiment 1
[0027] (1) Preparation of nanofibers
[0028] Dissolve 12g of polyacrylonitrile in 88g of N,N-dimethylformamide DMF solvent, stir at 40°C for 3h, and rotate at 500rpm to prepare a uniform and transparent polymer solution A;
[0029] Dopamine was dissolved in 10 mM Tris-HCl buffer solution to prepare 3 g / L dopamine solution B, and the pH value was adjusted to 8.5;
[0030] Put the above solution A and solution B into the two containers of the electrospinning equipment respectively, adjust the electrostatic parameters, the flow rate of the solution A syringe pump is fixed at 15μL / min, the applied voltage is 15KV, and the distance between the needle and the collector is 15cm; the flow rate of the syringe pump of solution B was fixed at 1mL / h, the applied voltage was 8KV, the distance between the needle and the collector was 10cm, the rotation speed of the collector was 300rpm, the spinning temperature was 30°C, and the humidity was 50% , the collector is wrapped with non-woven f...
Embodiment 2
[0057] (1) Preparation of nanofibers
[0058] Dissolve 16 polyvinylidene fluoride in 84N, N-dimethylformamide DMF solvent, stir at 60°C for 12h, and rotate at 500rpm to prepare a uniform and transparent polymer solution A;
[0059] Dopamine was dissolved in 10 mM Tris-HCl solution buffer to prepare 2 g / L dopamine solution B, and the pH was adjusted to 8.5;
[0060] Put the above two solutions A and B into the two containers of the electrospinning equipment, adjust the electrostatic parameters, the flow rate of the solution A syringe pump is fixed at 20μL / min, the applied voltage is 20KV, the distance between the needle and the collector The flow rate of the syringe pump of solution B is fixed at 2mL / h, the applied voltage is 15KV, the distance between the needle and the collector is 10cm, the rotational speed of the collector is 300rpm, the spinning temperature is 30°C, and the humidity is 50 %, the collector is wrapped with non-woven fabric, and dense dopamine composite nano...
Embodiment 3
[0065] (1) Preparation of nanofibers
[0066] Dissolve 22 cellulose acetate CA in N,N-dimethylformamide DMF solvent, stir at 60°C for 12 hours, and rotate at 500rpm to prepare a uniform and transparent polymer solution;
[0067] Dopamine was dissolved in 10 mM Tris-HCl solution buffer to prepare 2 g / L dopamine solution B, and the pH was adjusted to 8.5;
[0068] Put the above two solutions A and B into the two containers of the electrospinning equipment, adjust the electrostatic parameters, the flow rate of the solution A syringe pump is fixed at 50 μL / min, the applied voltage is 18KV, the distance between the needle and the collector The flow rate of the syringe pump of solution B is fixed at 2mL / h, the applied voltage is 15KV, the distance between the needle and the collector is 10cm, the rotational speed of the collector is 300rpm, the spinning temperature is 30°C, and the humidity is 50 %, the collector is wrapped with non-woven fabric, and dense dopamine composite nanofi...
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