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Conductive polymer film and preparation method thereof

A conductive polymer and film technology, applied in the field of conductive polymer film and its preparation, can solve the problems of complex preparation, low conductivity of conductive polymer film, difficult control of sample shape and size, etc., and achieve simple and convenient preparation method The effect of large-scale production, excellent controllability and wide range of applicability

Inactive Publication Date: 2012-07-04
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims to provide a conductive polymer film and its preparation method to solve the technical problems of low conductivity, difficult control of sample morphology and size and complicated preparation of conductive polymer films in the prior art

Method used

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  • Conductive polymer film and preparation method thereof
  • Conductive polymer film and preparation method thereof
  • Conductive polymer film and preparation method thereof

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Embodiment approach

[0027] According to a typical embodiment of the present invention, the method for preparing a conductive polymer film includes the following steps: 1) dissolving the monomer to be polymerized in an organic solvent to obtain solution A; 2) dissolving an oxidant in water to obtain solution B, 3) Mix solution A and solution B to obtain mixture C, freeze mixture C to form a crystal interface, and polymerize the monomer to be polymerized at the crystal interface to obtain a conductive polymer film. The freezing of the mixture C mentioned here means that the mixture C is placed in a constant temperature refrigerator for low-temperature freezing interfacial polymerization. The preparation process causes the organic solvent to crystallize to discharge the monomer to be polymerized under low temperature conditions, and the water crystal to discharge the oxidant ion. The discharged monomer to be polymerized is oxidized by the oxidant ion at the crystal interface formed by the organic solv...

Embodiment 1

[0036] Preparation of solution A: 0.18mmol of pyrrole monomer was dissolved in 3ml of cyclohexane to obtain a monomer concentration of 0.06mol / L.

[0037] Preparation of solution B: Dissolve 0.18 mmol of ammonium persulfate in 5 ml of deionized water, then add 0.60 mmol of concentrated hydrochloric acid, and mix well to obtain a clear solution.

[0038] The solution B was added to the test tube containing the solution A and stirred for a while, and then immediately placed in a constant temperature refrigerator at a temperature of -17° C. for low-temperature freezing interface polymerization. After 12 hours of reaction, the product was repeatedly washed with methanol, acetone, and water, and then filtered. Finally, it was dried in a vacuum oven at 60°C for 24 hours to obtain a bright metallic polypyrrole film with a thickness of 240nm and a conductivity of 580S / cm.

Embodiment 2

[0040] Preparation of solution A: Dissolve 0.72mmol of pyrrole monomer in 3ml of cyclohexane to obtain a monomer concentration of 0.24mol / L.

[0041] Preparation of solution B: Dissolve 1.45 mmol of anhydrous ferric chloride in 4 ml of deionized water, then add 2.90 mmol of p-benzoic acid and mix well to obtain a clear solution.

[0042] The solution B was added to the test tube containing the solution A and stirred for a while, and then immediately and immediately quickly frozen in a liquid nitrogen atmosphere. After the freezing was completed, it was placed in a constant temperature refrigerator at a temperature of -17°C for freezing interfacial polymerization. After 24 hours of reaction, the product was repeatedly washed with methanol, acetone, and water, and then suction filtered. Finally, it was dried in a vacuum oven at 60° C. for 24 hours to obtain a black metallic luster polypyrrole film with a thickness of 220 nm and a conductivity of 2010 S / cm.

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Abstract

The invention discloses a conductive polymer film and the preparation method thereof. The preparation method comprises the following steps: (1) dissolving polymer monomers in an organic solvent to obtain a solution A; (2) dissolving an oxidizer in water to obtain a solution B; and (3) mixing the solution A and the solution B to obtain a mixture C, and freezing the mixture C to form a crystal interface on which the monomers are polymerized to form the final product of conductive polymer film. The method has the advantages that the preparation technique is simple and convenient, the method has good controllability and wide application range and system, can be adapted to large-scale production, and is low in cost and great in economic benefit potential, and the conductive polymer film product is superior in electrical property.

Description

Technical field [0001] The invention relates to the field of polymer materials, in particular to a conductive polymer film and a preparation method thereof. Background technique [0002] Conductive polymers have the electronic characteristics of metals or semiconductors, the advantages of easy processing, and the unique mechanical properties of polymers, so they are polymer materials that integrate many specificities. The combination of these specific energies makes the conductive polymer a special material, which is favored by scientific researchers. Common conductive polymers are: polyacetylene, polyaniline, polypyrrole, polythiophene and so on. Conductive polymer nanomaterials have shown outstanding advantages in many technical application fields: high conductivity, high specific surface area, short charge transmission path, etc. These special properties are derived from their nanometer size. In summary, the synthesis methods of conductive polymers with special structures ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/02C08L79/04C08L65/00C08J5/18
Inventor 汪辉亮戚贵金
Owner BEIJING NORMAL UNIVERSITY
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