Method for preparing conducting polymer micro-nanofibers in magnetic spinning mode

A conductive polymer, micro-nano fiber technology, applied in the direction of conjugated synthetic polymer rayon, fiber processing, fiber chemical characteristics, etc., can solve the problems of morphology, size controllability and regularity, template removal trouble, Solvent volatilization waste and other problems, to achieve the effect of reducing production costs and safety hazards, low production equipment requirements, and orderly arrangement

Active Publication Date: 2015-09-16
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have different performances. For example, solution electrospinning can prepare conductive polymer nanofibers on a large scale. These nanofibers have relatively high conductivity and mobility, but the disadvantages are that the spinning voltage is relatively high, and solvent volatilization is wasteful.
The template synthesis method is a relatively simple and fast method to prepare conductive polymer nanofibers, but the removal of the template in the later stage is troublesome, and there are defects in shape, size controllability and regularity.
Dip-pen nanolithography using atomic force microscopy enables precise deposition of nanowires, but yields are lower and fibers are shorter

Method used

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  • Method for preparing conducting polymer micro-nanofibers in magnetic spinning mode
  • Method for preparing conducting polymer micro-nanofibers in magnetic spinning mode

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Effect test

Embodiment 1

[0026] A method for preparing conductive polymer micro-nano fibers by magnetic spinning, comprising the following steps:

[0027] (1) The construction of the magnetic spinning device: the magnetic spinning device is as follows: figure 1As shown, it includes a feeding device that can control the feeding rate, a spinning nozzle 4, a nozzle driving mechanism and a spinning receiving device, and the spinning receiving device includes a horizontally arranged collecting disc 6, and the collecting disc 6 The center of the bottom circle is connected with the output shaft of the DC brushless motor 10, and the DC brushless motor 10 is electrically connected to the power supply and the motor controller 11 for controlling the motor speed. The upper surface of the collecting disc 6 is symmetrical about the central axis of the disc. A plurality of vertical pillars are set, and the vertical pillars are 4, of which 1 is a permanent magnet 5, and 3 are metal fine needles 7, and the spinning no...

Embodiment 2

[0031] Post-treatment is carried out to the conductive polymer micro-nanofibers obtained in Example 1: the conductive polymer micro-nanofibers (PEDOT / γ-Fe) obtained in step (3) of Example 1 2 o 3 Composite micro-nanofibers) were soaked and oxidized in a mixed solution of sulfuric acid and nitric acid with a volume ratio of 3:1, the oxidation temperature was 80°C, and the time was 48 hours, then the micro-nanofibers were taken out and washed with deionized water and alcohol for 6 times Dry in vacuum at 110°C. The conductive polymer micro-nanowire without magnetic particles can be obtained.

Embodiment 3

[0033] A method for preparing conductive polymer micro-nano fibers by magnetic spinning, its steps are similar to embodiment 1, the difference is: step (2) preparation of spinning precursor solution: select sodium dodecylbenzene sulfonate as surfactant, Gamma-Fe with a diameter of 20 nm 2 o 3 Disperse the magnetic nanoparticles into chloroform, add surfactants with the same quality as the magnetic nanoparticles, and prepare γ-Fe 2 o 3 A magnetic fluid solution with a mass fraction of 11.5% of magnetic nanoparticles; 2.2 grams of polyvinylidene fluoride with a molecular weight of 270,000 was added to a mixed solution of 3.8 grams of N,N-dimethylformamide and 3.8 grams of acetone, heated in a water bath at 40°C and magnetically stirred for 3 After 1 hour, add 2.2 grams of polyaniline to prepare a polyaniline solution, heat in a water bath at 40°C and stir magnetically for 12 hours to mix the solution evenly to obtain a conductive polymer solution; the conductive polymer soluti...

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Abstract

The invention discloses a method for preparing conducting polymer micro-nanofibers in a magnetic spinning mode. The method comprises the steps that 1, a magnetic spinning device is built, wherein the magnetic spinning device comprises a rotary collection disc with a permanent magnet; 2, a spinning precursor solution is prepared, wherein magnetic nano particles, high-molecular polymer and conducting polymer are mixed and dissolved in an organic solvent solution; 3, the magnetic spinning device is utilized for preparing conducting polymer micro-nano complex fibers, wherein the spinning precursor solution is injected into a feeding device, the feeding device is started, liquid drops on an opening of a spinning nozzle forms a jet flow under the effect of magnetic field force to be connected with the permanent magnet to be a bridge, a brushless direct-current motor is started to drive the collection disc to rotate, the ferrofluid jet flow is continuously pulled out under the effect of magnetic field force, and conducting polymer micro-nanofibers are wound and formed among vertical supporting columns of the collection disc. The method does not need the high voltage effect, reduces the production cost and potential safety hazards, is suitable for large-scale production and has the good application prospect, and the fibers are distributed in order.

Description

technical field [0001] The invention relates to a preparation method of functional micro-nano fibers, in particular to a method for preparing conductive polymer micro-nano fibers by using an alternating magnetic field force. Background technique [0002] Conductive polymers (polyacetylene, polyaniline, polypyrrole, poly-3,4-dioxyethylthiophene, etc.) and one-dimensional nanomaterials (nanofibers, nanowires, nanotubes, nanospheres, nanorods, etc.) The excellent electrical, optical and redox properties make it have potential application prospects in many aspects, thus arousing widespread interest. Stretching method, template method, sol-gel method, gas phase synthesis method, electrospinning method, etc. are all methods for preparing one-dimensional conductive polymer micro-nanofibers. These methods have different performances. For example, solution electrospinning can prepare conductive polymer nanofibers on a large scale. These nanofibers have relatively high conductivity a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00D01D5/28D01F8/16D01F8/10D01F1/09D01F1/10
Inventor 龙云泽于桂凤董瑞华闫旭李金涛贾宪生贺晓晓魏代善管殿柱
Owner QINGDAO UNIV
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