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Composite electro and magneto conductive polyaniline microsphere and its prepn

A technology of conductive polyaniline and composite microspheres, which is applied in the field of functional materials, can solve the problems of difficult film formation of polymer microspheres, easy agglomeration and restriction of microspheres, and achieve good repeatability, uniform and controllable film thickness, low cost effect

Inactive Publication Date: 2006-08-02
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nano-polymer microspheres prepared by the above method are more likely to agglomerate, and the magnetic fluid particles dispersed in the microspheres are relatively large, showing ferromagnetism; and the polymer microspheres are difficult to form a film, so that It is limited in industrial applications

Method used

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  • Composite electro and magneto conductive polyaniline microsphere and its prepn
  • Composite electro and magneto conductive polyaniline microsphere and its prepn

Examples

Experimental program
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Effect test

Embodiment 1

[0031] 1) Dissolve 100mg intrinsic polyaniline in 10ml chloroform, add 128mg dodecylbenzenesulfonic acid, stir the mixed solution ultrasonically for 5h at room temperature; filter to remove the undissolved polyaniline, the filtrate obtained is 12 Conductive polyaniline solution doped with alkylbenzene sulfonic acid;

[0032] 2) Add 150 mg of polyethylene glycol (PEG, weight average molecular weight of 20000) to 3 ml of the conductive polyaniline solution prepared in step 1), and ultrasonically mix;

[0033] 3) Disperse 180 mg of magnetic ferroferric oxide in 6 ml of chloroform, add 0.06 mg of dodecylbenzene sulfonic acid, and mix well to obtain a magnetic dispersion;

[0034] 4) Add the magnetic dispersion liquid in step 3) to the mixed solution prepared in step 2), and ultrasonically mix to obtain a magnetic conductive polyaniline electrospinning solution;

[0035] 5) Pour the magnetic conductive polyaniline electrospinning solution prepared in step 4) into a vertically placed li...

Embodiment 2

[0040] 1) Dissolve 100mg intrinsic polyaniline in 10ml chloroform, add 128mg p-toluenesulfonic acid, stir the mixed solution ultrasonically for 5h at room temperature; filter to remove the undissolved polyaniline, the filtrate obtained is p-toluenesulfonic acid doped Mixed conductive polyaniline solution;

[0041] 2) Add 300 mg of polyethylene glycol (PEG, weight average molecular weight of 20000) to 3 ml of step 1) into 3 ml of the conductive polyaniline solution prepared in step 1), and ultrasonically mix;

[0042] 3) Disperse 90 mg of magnetic ferroferric oxide in 3 ml of chloroform solvent, add 0.03 mg of sodium dodecylbenzene sulfonate, and mix well to obtain a magnetic dispersion;

[0043] 4) Add the magnetic dispersion liquid in step 3) to the mixed solution prepared in step 2), and ultrasonically mix to obtain a magnetic conductive polyaniline electrospinning solution;

[0044] 5) Pour the magnetic conductive polyaniline electrospinning solution prepared in step 4) into a v...

Embodiment 3

[0049] 1) Dissolve 100mg intrinsic polyaniline in 10ml chloroform, add 128mg p-toluenesulfonic acid, stir the mixed solution ultrasonically for 5h at room temperature; filter to remove the undissolved polyaniline, the filtrate obtained is p-toluenesulfonic acid doped Mixed conductive polyaniline solution;

[0050] 2) Add 150 mg of polylactide (PLA, with a weight average molecular weight of 80,000) to 3 ml of the conductive polyaniline solution prepared in step 1), and ultrasonically mix;

[0051] 3) Disperse 90 mg of magnetic ferroferric oxide in 3 ml of chloroform solvent, add 0.03 mg of sodium dodecylbenzene sulfonate, and mix well to obtain a magnetic dispersion;

[0052] 4) Add the magnetic dispersion liquid in step 3) to the mixed solution prepared in step 2), and ultrasonically mix to obtain a magnetic conductive polyaniline electrospinning solution;

[0053] 5) Pour the magnetic conductive polyaniline electrospinning solution prepared in step 4) into a vertically placed liq...

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Abstract

The present invention relates to electrically and magnetically conductive polyaniline microsphere of particle size of 2-5 microns and containing polymer in 40-85 wt% and homogeneously distributed nanometer magnetic particle in 8-50 wt%. It is prepared through an electrostatic spinning process. It can form film in various kinds of substrates of different material and in different shapes, and may be used as electrode material, electromagnetic shielding material, antistatic sealing material, etc. It possesses electric conductivity, magnet conductivity and superparamagnetism simultaneously and thus may be dispersed homogeneously without coagulation. The preparation process has wide temperature range, simple and convenient operation and low cost, and is suitable for large scale preparation of various kinds of functional composite polymer microsphere.

Description

Technical field [0001] The invention belongs to the technical field of functional materials, and specifically relates to a conductive and magnetic conductive polyaniline composite microsphere, and a large-scale production method using electrostatic spinning technology. Background technique [0002] Organic conductive and magnetic conductive materials have broad application prospects in many fields such as batteries, electrical displays, molecular electrical devices, nonlinear optical materials, sensors, electromagnetic shielding materials, and microwave absorbing materials due to their excellent performance. Widely concerned and researched. Among the many conductive polymers, polyaniline has a diverse structure, unique doping mechanism, excellent electrochemical performance and good environmental stability, making it the most promising conductive polymer. [0003] Chinese invention patent application 03117132.X discloses a polymer microsphere with electrical conductivity, magneti...

Claims

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Application Information

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IPC IPC(8): C08J3/12C08K3/22C08L71/08C08L67/04C08L39/06
Inventor 朱英翟锦张敬畅万梅香江雷
Owner INST OF CHEM CHINESE ACAD OF SCI
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