Method for preparing acid doping conducting polyaniline material

A conductive polyaniline and acid doping technology, which is applied in the field of preparation of conductive polyaniline materials, can solve the problems of unsuitable storage, low conductivity of conductive polyaniline, poor environmental stability and the like, and achieves good electrochemical performance and good chemical stability. , non-volatile effect

Inactive Publication Date: 2008-09-17
LANZHOU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

Commonly used protonic acids include HCl and dodecylbenzenesulfonic acid (DBSA). Although HCl-doped polyaniline has high electrical conductivity, because HCl is easy to volatilize, the environment of the obtained doped polyaniline is stable. Poor performance, not suitable for storage; and DBSA-doped polyaniline, although it has good environmental stability, its electrical conductivity is much lower than that of HCl-doped polyaniline
[0003] Zheng Yudong et al.’s patent “Preparation Method of Soluble High Concentration Polyaniline Solution” (Application No. 98109188) used DBSA as an acid system for doping to prepare conductive polyani...

Method used

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preparation example Construction

[0007] The invention relates to a method for preparing an acid-doped conductive polyaniline material. In a sulfamic acid system, the aniline is polymerized through an oxidation initiator to synthesize the polyaniline doped with sulfamic acid. Concrete preparation steps of the present invention are:

[0008] (1) sulfamic acid is dissolved in distilled water, and the solution that makes mass concentration is 4~16%;

[0009] (2) add aniline in above-mentioned solution, the weight ratio of the add-on of aniline and sulfamic acid is 1: 18~1: 4, the weight ratio of the oxidized initiator of adding and aniline is 0.5: 1~3.5: 1, Stir the solution at a high speed at a temperature of 0 to 40°C to carry out polymerization for 2 to 8 hours. After the reaction, stand still, filter, wash with water for 2 to 4 times, rinse with acetone, and dry in a vacuum environment to obtain the ink. Powder of green acid doped conductive polyaniline material.

[0010] The oxidizing initiator mentioned a...

Embodiment 1

[0013] Dissolve a certain amount of sulfamic acid in distilled water to make a solution with a mass concentration of 4%; then add aniline, the weight ratio of the amount of aniline to sulfamic acid is 1:4; after the solution is uniform, slowly add Oxidative initiator ammonium persulfate, the weight ratio of ammonium persulfate to aniline is 1:1; at a temperature of 20°C, stir at a high speed, and polymerize for 2 hours; after the reaction, stand still, filter, and wash with water for 2-2 hours 4 times, rinsed with acetone, and dried in vacuum to obtain a powder of dark green acid-doped conductive polyaniline material.

Embodiment 2

[0015] Dissolve a certain amount of sulfamic acid in distilled water to make a solution with a mass concentration of 13%; then add aniline, the weight ratio of the amount of aniline added to the amount of sulfamic acid is 1: 14; after the solution is uniform, slowly Add dropwise the oxidative initiator ammonium persulfate, the weight ratio of ammonium persulfate to aniline is 1.7:1; at a temperature of 20°C, stir at a high speed, and carry out polymerization for 6 hours; after the reaction, stand still, filter, and wash with water 2 to 4 times, rinse with acetone, and dry in vacuum to obtain a dark green acid-doped conductive polyaniline powder.

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Abstract

The invention relates to a method for preparing an acid-doped conductive polyaniline material. The polymerization of aniline is triggered by an initiator under the aminosulfonic acid system and the aniline synthesizes the aminosulfonic acid-doped polyaniline. The aminosulfonic acid is an amphiphilic surfactant, the stability is very high, the volatilization is difficult, the prepared aminosulfonic acid-doped conductive polyaniline has good electrochemical property and chemical stability, and the resistance of the product can be controlled.

Description

technical field [0001] The invention relates to a preparation method of a conductive polyaniline material. Background technique [0002] Polyaniline (PANI) has high electrical conductivity, good electrochemical and optical properties, and good environmental stability. It is a conductive polymer material with excellent comprehensive properties. The conductivity of polyaniline in the intrinsic state is actually very low, but after doping with protonic acid, its conductivity can be increased by 12 orders of magnitude. Commonly used protonic acids include HCl and dodecylbenzenesulfonic acid (DBSA). Although HCl-doped polyaniline has high electrical conductivity, because HCl is easy to volatilize, the environment of the obtained doped polyaniline is stable. However, although DBSA-doped polyaniline has good environmental stability, its electrical conductivity is much lower than that of HCl-doped polyaniline. [0003] Zheng Yudong et al.’s patent “Preparation Method of Soluble Hi...

Claims

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Application Information

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IPC IPC(8): C08G73/02C08L79/02C08K5/42
Inventor 冯辉霞邵亮张国宏赵阳
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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