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Preparation method of composite acids doped with conductive polyaniline

A technology of conductive polyaniline and compound acid, which is applied in the field of compound acid doping to prepare conductive polyaniline, which can solve the problems of high cost and complicated preparation process

Inactive Publication Date: 2006-02-15
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation process of the doping acid is complicated and the cost is high

Method used

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  • Preparation method of composite acids doped with conductive polyaniline
  • Preparation method of composite acids doped with conductive polyaniline
  • Preparation method of composite acids doped with conductive polyaniline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Weigh 8g of sulfosalicylic acid into 100ml of distilled water in a beaker, and stir until completely dissolved. Pour the solution into a 250ml three-necked bottle, slowly add 2g of aniline dropwise, and stir at high speed. After stirring for 30 minutes, add the prepared ammonium peroxide solution dropwise for 30 minutes. React for ten hours at 15°C, filter with suction, put the polyaniline filter cake in an oven, bake at about 50°C for 24 hours, and grind it into powder. The conductivity of the polyaniline powder was measured by a four-electrode conductivity meter to be 11 S / cm.

Embodiment 2

[0036] Keeping the mass ratio of dopant to aniline monomer unchanged, changing the dopant component to be co-doped with sulfosalicylic acid and sodium dodecylbenzenesulfonate, changing the concentration of sulfosalicylic acid in the composite dopant Middle component is 87.5%, and other conditions are identical with embodiment 1. The electrical conductivity of the polyaniline powder was measured to be 8.3 S / cm.

Embodiment 3

[0038] Weigh 5.6g of sulfosalicylic acid and 2.4g of sodium dodecylbenzenesulfonate into 100ml of distilled water with a beaker, and stir until completely dissolved. Pour the solution into a 250ml three-necked bottle, slowly add 2g of aniline dropwise, and stir at high speed. After 30 minutes, the n-butanol solution was slowly added dropwise until the whole emulsion system became transparent. Then add the prepared ammonium peroxide solution dropwise for 30 minutes. React for ten hours at 15°C, filter with suction, put the polyaniline filter cake in an oven, bake at about 50°C for 24 hours, and grind it into powder. The electrical conductivity of the polyaniline powder was measured to be 5.8 S / cm.

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Abstract

The preparation method for conductive polyaniline with doped-composite acid is characterized in that, adding the aniline monomer, dopant, solvent, oxidant, and acidic solution into reactor to mix rapidly and form emulsion; controlling strictly the reaction condition; then, adding demulsifying agent, clearing, filtering, baking, and grinding to solid powder; adjusting the composite proportion between sulfosalicylic acid and type of other assist doped acid to control effectively the conductivity. This product can be used in antistatic material, EM shielding material and electronic element package.

Description

technical field [0001] The invention relates to a method for preparing conductive polyaniline by compound acid doping. Background technique [0002] In recent years, with the development of electronic technology, many novel electronic materials have been developed. Specifically, noteworthy technological innovations have been achieved in areas involving high-performance organic materials. Even in terms of conductive materials, some inorganic acids or macromolecular functional protonic acids have been developed to dope electronically conjugated polymers such as polyacetylene, polythiophene, polypyrrole and polyaniline. Conductive polymer material. Polyaniline is the most promising conductive polymer. It has excellent electrochemical performance and chemical stability, unique doping and dedoping mechanism, easy to obtain raw materials, and simple synthesis method. It is widely used in energy, optoelectronic devices, information, sensors, molecular wires and molecular devices...

Claims

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Application Information

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IPC IPC(8): C08G73/02
Inventor 马利甘孟瑜刘昊冯利军
Owner CHONGQING UNIV
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