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Conducting macromolecule polyaniline with silicon dioxide being adulterated, and preparing method, usage

A technology of conductive polymer and silicon dioxide, which is applied in the field of conductive polymer polyaniline doped with silicon dioxide and its preparation and application, can solve the problems of cumbersome reaction conditions, high cost, and difficulty in large-scale production, and achieve The product has high purity, wide application and good dispersion effect

Inactive Publication Date: 2006-05-31
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Enzyme-catalyzed synthesis and electrochemical synthesis have the disadvantages of high cost and cumbersome reaction conditions, respectively, making it difficult to achieve large-scale production

Method used

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  • Conducting macromolecule polyaniline with silicon dioxide being adulterated, and preparing method, usage
  • Conducting macromolecule polyaniline with silicon dioxide being adulterated, and preparing method, usage
  • Conducting macromolecule polyaniline with silicon dioxide being adulterated, and preparing method, usage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1). Prepare 250ml hydrochloric acid aqueous solution, the concentration of hydrochloric acid is 0.1 mol / liter.

[0028] (2). Add silica sol to make the concentration of silica after mixing be 0.05 mol / liter.

[0029] (3). Add aniline to the solution in step (2), so that the concentration of aniline in the mixed system is 0.01 mol / liter, continue to stir for 0.5 hours, and pre-cool to 0°C.

[0030] (4). The hydrochloric acid solution of preparation 15ml ammonium persulfate, the concentration of ammonium persulfate in the solution is 0.02 mol / liter, and the concentration of hydrochloric acid is 0.1 mol / liter. Precool the hydrochloric acid solution of the oxidizing agent to 0°C.

[0031] (5). Add half of the volume of the mixed solution obtained in step (4) to the mixed solution obtained in step (3) for 10 minutes. After 1 hour of reaction, the remaining half was added for 10 minutes. The reaction was continued at 0°C for 6 hours. The reaction product polyaniline can ...

Embodiment 2

[0033] Change the concentration of aniline into 1.0 mol / liter in the step (3) of embodiment 1, change the concentration of ammonium persulfate into 0.1 mol / liter in the step (4), and other conditions remain unchanged. The resulting particles were needle-shaped. See figure 2 .

Embodiment 3

[0035] (1). Prepare 250ml hydrochloric acid aqueous solution, the concentration of hydrochloric acid is 1 mol / liter.

[0036] (2). Add silica sol so that the concentration of silica after mixing is 0.005 mol / liter.

[0037] (3) Add aniline to the solution in step (2) so that the concentration of the mixed aniline is 0.1 mol / liter, continue to stir for 2 hours, and pre-cool to 0°C.

[0038] (4). Prepare the hydrochloric acid solution of 20ml potassium persulfate, the concentration of potassium persulfate in the solution is 0.01 mol / liter, and the concentration of hydrochloric acid is 1 mol / liter. Precool the hydrochloric acid solution of the oxidizing agent to 0°C.

[0039] (5). Add half of the volume of the mixed solution obtained in step (4) to the mixed solution obtained in step (3) for 5 minutes. After 1 hour of reaction, the remaining half was added for 5 minutes. The reaction was continued at 0°C for 3 hours. The reaction product polyaniline can be obtained by centrif...

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Abstract

The invention belongs to the technical field of preparation and application of materials with conductive functions, and in particular relates to conductive polymer polyaniline doped with silicon dioxide and its preparation method and application. The present invention utilizes the coagulation characteristic of sol, adopts the oxidation polymerization method to prepare polyaniline particles doped with silicon dioxide; the weight percentage concentration of silicon dioxide contained in conductive polymer polyaniline is 10-30%, and the weight percentage concentration of polyaniline is 10-30%. 70-90%. Polyaniline doped with silicon dioxide is spherical, filamentous or needle-like in shape, and is an electrode material, microelectronic technology material, antistatic and shielding material. The method of the invention not only has low energy consumption, simple process, good product dispersibility, and the morphology of polyaniline doped with silicon dioxide can be controlled by means of reaction conditions.

Description

field of invention [0001] The invention belongs to the technical field of preparation and application of materials with conductive functions, and in particular relates to conductive polymer polyaniline doped with silicon dioxide and its preparation method and application. Background technique [0002] Since Macdiarmid et al. [Macdiarmid, A.G.; Chiang, J.C.; Halpen, M.; Huang, W.S.; Somasi, S.L.; Wu, W.; Yaniger, S.I. Mol. ] Re-research found that polyaniline is a conductive polymer, and because of the uniqueness of polyaniline, people's research on conductive polymers has mainly focused on polyaniline in recent years, which has aroused extensive research interest. The uniqueness of polyaniline is that its electrical properties can be reversibly controlled by acid / alkali treatment and redox reactions, that is, polyaniline can be reversibly modified by pH changes, and polyaniline particles can be changed from a conductive state to a conductive state w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/02C08K3/36
Inventor 唐芳琼庞雪雷
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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