A high-yield, green synthesis method for conductive polyaniline

A conductive polyaniline, green synthesis technology, applied in the field of conductive polyaniline synthesis, can solve the problems of environmental protection, waste of resources, etc., and achieve the effects of saving resources, high utilization rate of waste liquid, and high yield

Active Publication Date: 2020-12-15
柳州市盛昊纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The classic chemical oxidative polymerization method generally oxidatively polymerizes aniline in an acidic aqueous solution, but in the prior art, the waste liquid generated by this method is directly discarded, which is not environmentally friendly and causes a waste of resources

Method used

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  • A high-yield, green synthesis method for conductive polyaniline
  • A high-yield, green synthesis method for conductive polyaniline
  • A high-yield, green synthesis method for conductive polyaniline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A high-yield, green synthesis method of conductive polyaniline, comprising the following steps:

[0045] (a) Dissolve the organic protonic acid in water and place it in a three-necked flask, add aniline monomer and oxidant at a stirring speed of 500rpm, the reaction temperature is 0°C, and the reaction time is 10h, wash and filter the obtained substance with water and ethanol , to obtain the 0th filtrate and No. 0 polyaniline powder, the organic protonic acid is toluenesulfonic acid, and the concentration of the organic protonic acid is 0.7mol / L;

[0046] (b) Take the 0th filtrate described in step (a) and place it in a three-necked flask, then add aniline monomer and oxidant at a stirring speed of 500rpm, the reaction temperature is 0°C, and the reaction time is 10h, and the obtained The substance was washed and filtered with water and ethanol to obtain the first filtrate and No. 1 polyaniline powder;

[0047] (c) Take the first filtrate described in step (b) and plac...

Embodiment 2

[0065] A high-yield, green synthesis method of conductive polyaniline, comprising the following steps:

[0066] (a) Dissolve the organic protonic acid in water and place it in a three-necked flask, add aniline monomer and oxidant at a stirring speed of 1000rpm, the reaction temperature is 30°C, and the reaction time is 5h, wash and filter the obtained substance with water and ethanol , to obtain the 0th filtrate and No. 0 polyaniline powder, the organic protonic acid is benzoic acid, and the concentration of the organic protonic acid is 0.7mol / L;

[0067] (b) Take the 0th filtrate described in step (a) and put it in a three-necked flask, add aniline monomer and oxidant at a stirring speed of 1000rpm, the reaction temperature is 30°C, and the reaction time is 5h, the obtained The substance was washed and filtered with water and ethanol to obtain the first filtrate and No. 1 polyaniline powder;

[0068] (c) Take the first filtrate described in step (b) and place it in a three-n...

Embodiment 3

[0072] A high-yield, green synthesis method of conductive polyaniline, comprising the following steps:

[0073] (a) Dissolve the organic protic acid in water and place it in a three-necked flask, add aniline monomer and oxidant at a stirring speed of 500rpm, the reaction temperature is 30°C, and the reaction time is 10h, wash and filter the obtained substance with water and ethanol , to obtain the 0th filtrate and No. 0 polyaniline powder, the organic protonic acid is camphorsulfonic acid, and the concentration of the organic protonic acid is 0.7mol / L;

[0074] (b) Take the 0th filtrate described in step (a) and put it in a three-necked flask, add aniline monomer and oxidant at a stirring speed of 500rpm, the reaction temperature is 30°C, and the reaction time is 10h, the obtained The substance was washed and filtered with water and ethanol to obtain the first filtrate and No. 1 polyaniline powder;

[0075] (c) Take the first filtrate described in step (b) and place it in a t...

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Abstract

The invention provides a high-yield and green synthesis method of conductive polyaniline. The synthesis method comprises the following steps: dissolving organic protonic acid in water, adding an aniline monomer and an oxidizing agent at a stirring speed of 500-1000 rpm, keeping the reaction temperature at 0-30 DEG C, keeping the reaction time at 5-10 hours, and washing and filtering the obtained substance to obtain a filtrate and polyaniline powder; and then adding an aniline monomer and an oxidizing agent into the filtrate to obtain polyaniline powder, wherein the filtrate is repeatedly usedfor one to three times. According to the high-yield and green synthesis method of the conductive polyaniline, the waste liquid generated through a chemical oxidative polymerization method can be reused, the prepared conductive polyaniline product has excellent performance, the use requirement of products is reached, resources are saved, and the synthesis method is environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of synthesis of conductive polyaniline, in particular to a high-yield and green synthesis method of conductive polyaniline. Background technique [0002] Polyaniline has the advantages of unique doping mechanism, excellent physical and chemical properties, good environmental stability, cheap raw materials, and convenient synthesis. Wide application prospects. The synthesis methods of polyaniline mainly include chemical oxidation polymerization method, electrochemical polymerization method, solution polymerization method and microemulsion polymerization method. The product yield of chemical oxidation polymerization method is relatively high, and the process flow is relatively simple, suitable for industrial production; The polymerization method is generally used to prepare PANI coatings; the solution polymerization method has a higher yield and better solubility; the microemulsion polymerization method is ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02
CPCC08G73/0266
Inventor 陶玉仑李宝宇黄亚楠
Owner 柳州市盛昊纳米科技有限公司
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