Method for preparing ordered coaxial structural micro and nano fibers
A technology of micro-nano fibers and ordered arrangement is applied in the field of preparation of micro-nano fibers of ordered coaxial structure, which can solve the problems of low proportion of conductive polymers, limiting the application of composite fibers, reducing the electrical conductivity of fiber membranes, and the like. Achieve the effect of eliminating secondary pollution, avoiding excessive contact, and having a high degree of orderly arrangement of fibers
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[0012] The rotating disc electrospinning device (belonging to the inventor’s invention patent) used in this embodiment includes a syringe 1, a spinning solution 2, an electrospinning nozzle 3, a rotating disc 4, a high-voltage power supply 5, a motor 6 and a sticker with Rectangular slit grooved plastic substrate (or disc collector) 7; when the rotating disc electrospinning device prepares ordered PMMA fibers, the electrospinning precursor polymethylmethacrylate (PMMA ) Solution preparation: Dissolve 1.5 g of PMMA in the solvent of N, N dimethylformamide (DMF, 4 g) and tetrahydrofuran (THF, 4 g) with a mass ratio of 1:1, and magnetically stir at room temperature for 3 hours to obtain PMMA DMF / THF solution is used as the precursor of electrospinning; the spinning device adopts a rotating disc type electrospinning device, and the height of the electrospinning nozzle 3 relative to the rotating disc 4 is continuously adjustable in the range of 0.5 to 10 cm. The sp...
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