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Preparation method of magnetic fluids with polyaniline derivatives wrapping nano magnetic particles

A technology of magnetic liquid and magnetic particles, applied in the direction of magnetic liquid, etc., can solve the problem of size and magnitude control of conductive polymer coating layer

Active Publication Date: 2014-03-05
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the preparation of this type of magnetic liquid needs to overcome three difficulties: one is the stability of the conductive polymer-wrapped magnetic nanoparticles; the other is the size control of the conductive polymer coating; the third is how to stably disperse the wrapped magnetic nanoparticles in carrier fluid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A. Mix the solution with 4.34g of ferrous chloride tetrahydrate and the solution with 10.32g of ferric chloride hexahydrate, add 40ml of ammonia water (mass concentration 28%), stir mechanically, then add 3g of o-aminobenzene Formic acid in 10ml of ethanol was stirred in a water bath at 75°C for one hour.

[0015] B. After the reaction, pour into the beaker, put the beaker on the NdFeB strong magnet and let it stand for ten minutes, physical magnetic separation, pour off the upper liquid after magnetic separation, wash with deionized water for 6 times, and then wash with acetone for 3 times , and finally vacuum-dried to obtain anthranilic acid-coated Fe 3 o 4 magnetic particles.

[0016] C, Fe wrapped with the obtained anthranilic acid 3 o 4 Add magnetic particles into deionized water and stir mechanically, adjust the solution to PH=1 with hydrochloric acid and deionized water, add 1.5ml of aniline monomer and 200ml of hydrochloric acid (0.1 M HCl aq) dissolved in 1...

Embodiment 2

[0019] A. Mix the solution with 4.55g of ferrous chloride tetrahydrate and the solution with 10.32g of ferric chloride hexahydrate, add 40ml of ammonia water (28%), stir mechanically, then add 3g of anthranilic acid 10ml of ethanol was stirred in a water bath at 75°C for one hour.

[0020] B. After the reaction, pour into the beaker, put the beaker on the NdFeB strong magnet and let it stand for ten minutes, physical magnetic separation, pour off the upper liquid after magnetic separation, wash with deionized water for 6 times, and then wash with acetone for 3 times , and finally vacuum-dried to obtain anthranilic acid-coated Fe 3 o 4 magnetic particles.

[0021] C, Fe wrapped with the obtained anthranilic acid 3 o 4 Add magnetic particles into deionized water and stir mechanically, adjust the solution to PH=1 with hydrochloric acid and deionized water, add 1.5ml of aniline monomer and 200ml of hydrochloric acid (0.1 M HCl aq) dissolved in 10g of ammonium persulfate and st...

Embodiment 3

[0024] A. Mix the solution with 4.34g of ferrous chloride tetrahydrate and the solution with 10.32g of ferric chloride hexahydrate, add 40ml of ammonia water (28%), stir mechanically, then add 3g of anthranilic acid 10ml of ethanol was stirred in a water bath at 75°C for one hour.

[0025] B. After the reaction, pour into the beaker, put the beaker on the NdFeB strong magnet and let it stand for ten minutes, physical magnetic separation, pour off the upper liquid after magnetic separation, wash with deionized water for 6 times, and then wash with acetone for 3 times , and finally vacuum-dried to obtain anthranilic acid-coated Fe 3 o 4 magnetic particles.

[0026] C, Fe wrapped with the obtained anthranilic acid 3 o 4 Add magnetic particles into deionized water and stir mechanically, adjust the solution to PH=1 with hydrochloric acid and deionized water, add 1.5ml of aniline monomer and 200ml of hydrochloric acid (0.1 M HCl aq) dissolved in 10g of ammonium persulfate and st...

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Abstract

The invention relates to a preparation method of magnetic fluids with polyaniline derivatives wrapping nano magnetic particles. By step-by-step interpenetrating reactions, polyaniline derivatives can form chemical bonds firmly wrapping Fe3O4 nano particles. The method specifically includes: using anthranilic acid to modify the surfaces of the Fe3O4 nano particles, adding aniline monomer for polymerization to form the polyaniline derivatives, inoculating dodecylbenzene sulfonic acid to the surfaces of the Fe3O4 / polyaniline derivative composite particles, and allowing the Fe3O4 / polyaniline derivative composite particles to be stably scattered in basic carrier liquid due to the alkane parent non-polar features of the dodecylbenzene sulfonic acid so as to obtain the magnetic fluids with polyaniline derivatives wrapping nano Fe3O4 particles. The photoelectric performance of the magnetic fluids can change regularly under the action of a regularly changed magnetic field, so that the photoelectric performance indexes of the magnetic fluids can be adjusted by adjusting the strength of the magnetic field, a novel research branch is developed in researches of magnetic fluids, and signification research and application values are achieved.

Description

technical field [0001] The invention relates to a preparation method of a conductive polymer-wrapped nano-magnetic particle magnetic liquid, in particular to a preparation method of a polyaniline derivative-wrapped nano-magnetic particle magnetic liquid. technical background [0002] Magnetic liquid refers to a highly stable colloidal solution composed of nano-magnetic particles whose size is smaller than a single magnetic domain and is highly dispersed in a liquid base carrier liquid. The dispersant of a general magnetic liquid is an organic polymer chain, which does not have Special properties, and once the original nano-magnetic particles and dispersant are coated with a layer of organic semiconductor in the magnetic liquid, a new type of organic-inorganic hybrid magnetic liquid emerges at the historic moment. The organic semiconductor combines with the magnetic liquid organic After the combination, the performance of organic semiconductors can make the magnetic liquid ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/44C08G73/02
Inventor 谢宇潘建飞张秋根李明俊黄彦李凤
Owner NANCHANG HANGKONG UNIVERSITY
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