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Preparation method of composite nanofiber

A composite nanofiber and preparation technology, applied in the field of nanomaterials, can solve the problems of different solubility properties, difficult to mix electrospinning, etc., and achieve the effect of simple preparation process, good shape and smooth surface

Inactive Publication Date: 2014-01-01
KUNSHAN WANFENG GARMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to chitosan and Fe 3 0 4 The solubility properties are different, and it is difficult to carry out mixed electrospinning at the same time, and there are no related reports so far

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A preparation process for composite nanofibers, the process steps are as follows:

[0020] (1) Synthesis of Fe3O4 nanoparticles

[0021] in N 2 Under gas protection, 12g of FeCl 3 ·6H 2 O and 4.9 g FeCl 2 4H 2 O was added to deoxygenated water, stirred until completely dissolved, heated to 45°C, and concentrated NH 3 ·H 2 O was dropped into the above solution drop by drop, the solution immediately turned black, stirred vigorously, adjusted the pH value to 10, continued to heat to 80°C, continued to stir for 1 hour, stood still, and separated Fe with a permanent magnet. 3 o 4 , washed with deionized water until neutral, and dried in a vacuum oven at 60°C to constant weight to obtain iron ferric oxide nanoparticles for subsequent use;

[0022] (2) Preparation of spinning solution

[0023] a: Preparation of core layer spinning solution: PVP / Fe with a mass ratio of 20:1 3 o 4 The blend was dissolved in absolute ethanol, configured as a spinning solution with a ma...

Embodiment 2

[0028] A preparation process for composite nanofibers, the process steps are as follows:

[0029] (1) Synthesis of Fe3O4 nanoparticles

[0030] in N 2 Under gas protection, 12g of FeCl 3 ·6H 2 O and 4.9 g FeCl 2 4H 2 O was added to deoxygenated water, stirred until completely dissolved, heated to 45°C, and concentrated NH 3 ·H 2 O was dropped into the above solution drop by drop, the solution immediately turned black, stirred vigorously, adjusted the pH value to 10, continued to heat to 80°C, continued to stir for 1 hour, stood still, and separated Fe with a permanent magnet. 3 o 4 , washed with deionized water until neutral, and dried in a vacuum oven at 60°C to constant weight to obtain iron ferric oxide nanoparticles for subsequent use;

[0031] (2) Preparation of spinning solution

[0032] a: Preparation of core layer spinning solution: PVP / Fe with a mass ratio of 10:1 3 o 4 The blend was dissolved in absolute ethanol, configured as a spinning solution with a ma...

Embodiment 3

[0037] A preparation process for composite nanofibers, the process steps are as follows:

[0038] (1) Synthesis of Fe3O4 nanoparticles

[0039] in N 2 Under gas protection, 12g of FeCl 3 ·6H 2 O and 4.9 g FeCl 2 4H 2 O was added to deoxygenated water, stirred until completely dissolved, heated to 45°C, and concentrated NH 3 ·H 2 O was dropped into the above solution drop by drop, the solution immediately turned black, stirred vigorously, adjusted the pH value to 10, continued to heat to 80°C, continued to stir for 1 hour, stood still, and separated Fe with a permanent magnet. 3 o 4 , washed with deionized water until neutral, and dried in a vacuum oven at 60°C to constant weight to obtain iron ferric oxide nanoparticles for subsequent use;

[0040] (2) Preparation of spinning solution

[0041] a: Preparation of core layer spinning solution: PVP / Fe with a mass ratio of 5:1 3 o 4 The blend was dissolved in absolute ethanol, configured as a spinning solution with a mas...

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Abstract

The invention relates to a preparation method of a composite nanofiber. The process comprises the following steps: (1) synthesizing ferroferric oxide nanoparticles; (2) preparing a core spinning liquid and a shell spinning liquid; (3) respectively filling the configured core spinning liquid and the shell spinning liquid in a 5ml injector, and preparing the composite nanofiber by using a coaxial electrostatic spinning method. The preparation process provided by the invention has the beneficial effects that PVP (Polyvinyl Pyrrolidone) / CS / Fe3O4 composite nanofiber prepared by using the process provided by the invention is good in shape, uniform in thickness and smooth in surface, and the diameter distribution is within a range of 350-800nm; ferroferric oxide is distributed in the fiber in a crystalline state, so that the composite nanofiber has a good superparamagnetic effect. The novel composite fiber integrates three different components and contains various active groups, thereby laying a foundation for subsequent modification and application. The composite nanofiber is simple in preparation process and excellent in performance, and is expected to become an excellent composite material in the field of biological medicines.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a preparation process of composite nanofibers. Background technique [0002] As a simple and effective method for preparing ultrafine nanofibers, electrospinning technology has been favored by researchers. Nanomaterials are a new type of material born in the 1980s, and are currently known as high-tech materials across the century. As an important research and development direction of nanoscience, it has become a hot spot in material science research in recent years. The unique size effect, quantum effect and surface effect of nanomaterials make them have many properties different from conventional materials, and have broad application prospects in many fields such as catalysis, biosensors, microelectronic devices and magnetic materials. Due to their excellent properties, organic / inorganic composite nanofibers have been widely used in chemical (biological...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/10D01F8/18D01F1/10D01D5/00D01D5/34D01D1/02
Inventor 姚建平
Owner KUNSHAN WANFENG GARMENT
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