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Copolymer of conductive polyaniline and m-aminophenol and its synthesis process

A technology of m-aminophenol and conductive polymer, applied in the polymer field, can solve the problems of low conductivity and loss of electrochemical activity, etc., and achieve the effect of convenient control

Inactive Publication Date: 2006-08-02
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above properties are affected by pH, which limits its application to a certain extent, because at pH>4, polyaniline almost completely loses its electrochemical activity, and its conductivity becomes very low.

Method used

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  • Copolymer of conductive polyaniline and m-aminophenol and its synthesis process
  • Copolymer of conductive polyaniline and m-aminophenol and its synthesis process
  • Copolymer of conductive polyaniline and m-aminophenol and its synthesis process

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Experimental program
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Embodiment Construction

[0019] 1. Raw material preparation

[0020] Aniline, m-aminophenol and sulfuric or hydrochloric acid

[0021] Aniline was distilled under reduced pressure and stored in a 4°C refrigerator for later use

[0022] 2. Distribution of electrolyte

[0023] Add aniline and m-aminophenol into sulfuric acid or hydrochloric acid aqueous solution, stir until homogeneous with an electromagnetic stirrer, and adjust the concentration of aniline to 0.25-0.40mol dm-3 and the concentration of m-aminophenol to 0.008-0.016mol dm-3 , the concentration of sulfuric acid is 1.8~3.0mol·dm-3, or the concentration of hydrochloric acid is 2.5~6.0mol·dm-3

[0024] 3. Electrolytic cell preparation

[0025] The electrolytic cell adopts a three-electrode system consisting of two platinum sheets and a saturated calomel electrode (SCE) reference electrode, or a carbon electrode, a platinum sheet and a saturated calomel reference electrode.

[0026] 4. Electrolytic synthesis

[0027] The prepared solution...

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Abstract

The present invention is aniline-m-aminophenol copolymer as one kind of conductive polymer and its synthesis. Inside an electrolytic bath with Pt electrode or C electrode, aniline, m-aminophenol and sulfuric acid or hydrochloric acid are electrolyzed to obtain the conductive polymer, aniline-m-aminophenol copolymer, which is washed with dilute hydrochloric acid solution and dried. The conductive polymer has excellent characteristic similar to that of polyaniline, and capacity of maintaining high chemical activity in strong acid solution and pH 1.0-11.0 sodium sulfate solution. When the pH value of the copolymer raises from 5.0 to 11.0, it has chemical activity lowered to 58.3 %. The copolymer has wide application potential range,(-0.2 to 0.80 Vú¼vs.SCE), conductivity of 0.8-1.4S / cm, and lower dependence on pH value.

Description

technical field [0001] The invention relates to the technical field of a high polymer with conductive properties Background technique [0002] Among conductive polymers, polyaniline is the most attractive. This is because polyaniline has high electrical conductivity, redox reversibility, the color of the film can change rapidly with potential, and it is very stable in aqueous solution and air. These properties are suitable for applications in storage batteries, electrocatalysis, electrochromism, and photoelectric conversion. In addition, polyaniline is easy to synthesize and low in cost. However, the above properties are affected by pH, which limits its application to a certain extent, because at pH > 4, polyaniline almost completely loses its electrochemical activity, and its conductivity becomes very low. . Therefore, the pH characteristic of polyaniline is a key factor controlling the properties and applications of polyaniline. Contents of the invention [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/00
Inventor 穆绍林张静单丹
Owner YANGZHOU UNIV
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