Directional magnetic electrical spinning Nano fibers, preparation method and equipment needed

An electrospinning nanofiber, magnetic technology, applied in fiber processing, textile and papermaking, fiber chemical characteristics and other directions, can solve the problem of magnetic nanofiber preparation method that has not been reported yet, achieves easy popularization and application, simple preparation process, Easy to manipulate and repeatable effects

Inactive Publication Date: 2008-11-12
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, the preparation method of magnetic nanofibers that can be aligned has not been reported

Method used

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  • Directional magnetic electrical spinning Nano fibers, preparation method and equipment needed
  • Directional magnetic electrical spinning Nano fibers, preparation method and equipment needed
  • Directional magnetic electrical spinning Nano fibers, preparation method and equipment needed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A. In a 100mL volumetric flask, prepare FeCl with a concentration of 0.1mol L with distilled water 2 with FeCl 3 solution; add 35mL 0.1mol·L FeCl in a round bottom flask with mechanical stirring 3 solution and 20mL 0.1mol·L FeCl 2 The solution is mixed evenly, and nitrogen gas is passed under the liquid surface to remove oxygen in the water. The temperature of the reaction device was raised to 80°C, and the ammonia water was slowly added dropwise to the solution until the pH value of the solution was 6.5. After 15 minutes of reaction, the ammonia water was slowly added dropwise to the solution until the pH value was 9.5, and the reaction was stopped after 30 minutes of reaction; Hold the bottom of the flask with a strong magnet, pour off the upper liquid, and wash the reaction product repeatedly with distilled water until the washing liquid is neutral; the product Fe 3 o 4 Freeze drying;

[0025] B. The dried Fe 3 o 4 The nanoparticles are dispersed in the aqueou...

Embodiment 2

[0029] Fe 3 o 4 The mass ratio of polyvinyl alcohol to polyvinyl alcohol is 1:100, and the rest of the experimental conditions and the amount of reaction substances are the same as in Example 1 to obtain nanofibers with a fiber diameter distribution of 100-600 nm and aligned along the direction of the magnetic field.

Embodiment 3

[0031] Fe 3 o 4 The mass ratio of polyvinyl alcohol to polyvinyl alcohol is 50:100, and the rest of the experimental conditions and the amount of reaction substances are the same as in Example 1 to obtain nanofibers with a fiber diameter distribution of 100-600 nm and aligned along the direction of the magnetic field.

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Abstract

A method for preparing directional magnetic nanofiber of electric-spinning type includes utilizing Fe3O4 magnetic fluid and high polymer solution as raw material and applying normal position composite means to carry out electric-spinning under certain conditions, setting magnetic field at receiving unit to use magnetic field to induce high polymer nanofiber containing Fe3O4 to be directionally arranged along magnetic field direction for obtaining nanofiber being set with diameter of 100-600nm and being directionally arranged along magnetic direction. The device for realizing said method is also disclosed.

Description

technical field [0001] The invention belongs to magnetic polymer nanofibers and preparation technology thereof, in particular to a nanometer-scale containing paramagnetic Fe 3 o 4 Oriented polymer fibers and their preparation techniques and equipment used. Background technique [0002] With the development of electrospinning technology, people began to dope nanoparticles with special functions into nanofibers, hoping to obtain nanofibers with specific functions. For example, nanocomposites with high catalytic activity can be obtained by doping Pt nanoparticles into nanofibers; nanofibers with semiconducting properties can be prepared by doping Ag nanoparticles into polyacrylonitrile. But so far, the preparation method of magnetic nanofibers capable of directional arrangement has not been reported. Magnetic nanofibers have broad application prospects in the fields of targeted drug delivery, electronic components, nonlinear optical materials, sensors, electromagnetic shield...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F1/02D01F6/14D01F6/64D01F6/62D01F9/00D01D5/00
Inventor 聂俊杨冬芝张静
Owner BEIJING UNIV OF CHEM TECH
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