A kind of preparation method of catalytic nanofiber
A nanofiber and catalyst technology, applied in fiber treatment, fiber type, coating, etc., can solve the problems of lower effective utilization rate and lower spinnability of original spinning solution, so as to improve moisture resistance and weaken competitive adsorption , good moisture resistance
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Embodiment 1
[0026] (1) Preparation of nanofibers
[0027] Dissolve 12g of polyacrylonitrile in 88g of N,N-dimethylformamide DMF solvent, stir at 40°C for 3h, and rotate at 500rpm to make a uniform and transparent polymer solution;
[0028] Put the above polymer solution into the electrospinning equipment, adjust the electrostatic parameters, the flow rate of the syringe pump is fixed at 15μL / min, the distance between the needle and the collector is 15cm, the applied voltage is 15KV, and the rotational speed of the collector is 500rpm. The temperature of the silk is 25°C, the humidity is 50%, and a dense nanofibrous network is collected on a non-woven support layer.
[0029] The prepared nanofibers were scanned by electron microscope, and the photos are as follows: figure 1 shown.
[0030] (2) nanofiber modification
[0031] Soak the nanofibers thus formed in a 2g / L dopamine solution, use 10mM Tris-HCl solution as a buffer, adjust the pH to 8.5, shake and soak at 25°C for 10h, so that d...
Embodiment 2
[0058] (1) Preparation of nanofibers
[0059] Dissolve 16g of polyvinylidene fluoride in 84g of N,N-dimethylformamide DMF solvent, stir at 60°C for 12h, and rotate at 500r / min to make a uniform and transparent polymer solution;
[0060] Put the above polymer solution into the electrospinning equipment, adjust the electrostatic parameters, the flow rate of the syringe pump is fixed at 20μL / min, the distance between the needle and the collector is 17cm, the applied voltage is 20KV, and the rotational speed of the collector is 500rpm. The temperature of the filaments was 25°C, the humidity was 50%, and a dense fiber web was collected on a non-woven support layer.
[0061] (2) nanofiber modification
[0062] Soak the nanofibers thus formed in a 2g / L dopamine solution, use 10mM Tris-HCl solution as a buffer, adjust the pH to 8.5, shake and soak at 25°C for 10h, so that dopamine self-polymerizes on the surface of the nanofibers, and then The dopamine-coated nanofibers were washed ...
Embodiment 3
[0067] (1) Preparation of nanofibers
[0068] Dissolve 30g of polystyrene PS in 70g of N,N-dimethylformamide DMF solvent, stir at 30°C for 12h, and rotate at 500rpm to make a uniform and transparent polymer solution;
[0069] Put the above polymer solution into the electrospinning equipment, adjust the electrostatic parameters, the flow rate of the syringe pump is fixed at 15μL / min, the distance between the needle and the collector is 15cm, the applied voltage is 16KV, and the rotational speed of the collector is 500rpm. The temperature of the filaments was 25°C, the humidity was 40%, and a dense fiber web was collected on a non-woven support layer.
[0070] (2) nanofiber modification
[0071] Soak the nanofibers thus formed in a 5 g / L dopamine solution, use 10 mM Tris-HCl solution as a buffer, adjust the pH to 8.5, and soak for 5 h at 25 ° C to allow dopamine to self-polymerize on the surface of the nanofibers, and then apply The dopamine-coated nanofibers were washed with ...
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