Preparation method of high-conductivity polyaniline by using hydrochloric acid doped cellulose as template

A technology of cellulose and high conductivity, applied in the field of conductive polymer material preparation, can solve the problems of difficult control of operation process, high cost, low conductivity of polyaniline, etc., and achieve the effect of easy operation, improved conductivity and high conductivity

Inactive Publication Date: 2013-03-13
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods can prepare polyaniline with higher conductivity, but the cost of these methods is very high, and the operation process is difficult to control
[0003] Aiming at the shortcomi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: the preparation method of the highly conductive polyaniline that hydrochloric acid is doped with ethyl cellulose as template, specific content is as follows:

[0017] ①Dissolve 31g of ammonium persulfate in 200ml of 1mol / L HCL solution, stir it with magnetic force to dissolve, and put it in an ice bath to 0°C to obtain ammonium persulfate solution, in which the molar ratio of ammonium persulfate to aniline is 1.25:1;

[0018] ② Dissolve 0.5g of commercially available ethyl cellulose (180-220mPa.s, measurement condition 5% toluene / isopropanol 80:20) in 50ml of ethanol, stir magnetically and seal with plastic wrap. Add 50ml of distilled water dropwise into the cellulose solution through the funnel. After 10 minutes of the dropwise addition, adjust the pH of the solution to ≤1 with 1mol / L hydrochloric acid, and place the solution in an ice bath to 5°C to obtain an ethylcellulose solution;

[0019] ③Add 10.1g of aniline dropwise to the ethyl cellulose solution...

Embodiment 2

[0023] Embodiment 2: the preparation method of the highly conductive polyaniline that hydrochloric acid doped methyl cellulose is template, specific content is as follows:

[0024] ①Dissolve 31g of ammonium persulfate in 310ml of 2mol / L HCL solution, stir to dissolve with magnetic force, and put it in ice bath to 3°C to obtain ammonium persulfate solution, in which the molar ratio of ammonium persulfate to aniline is 1.3:1;

[0025] ②Disperse 0.19g of commercially available methylcellulose in 30ml of ethanol, stir magnetically and seal with plastic wrap. After the dispersion is complete, add 22ml of distilled water dropwise to the methylcellulose solution with a separatory funnel. 2mol / L hydrochloric acid to adjust the pH of the solution to ≤1, and ice-bath the solution to 0°C to obtain a methylcellulose dispersion solution;

[0026] ③ Add 9.7g of aniline dropwise to the methylcellulose solution prepared in step ② under stirring, mix, and magnetically stir until completely dis...

Embodiment 3

[0030] Embodiment 3: the preparation method of the highly conductive polyaniline of hydrochloric acid doped cellulose as template, specific content is as follows:

[0031] ①Dissolve 31g of ammonium persulfate in 240ml of 2mol / L HCL solution, stir it with magnetic force to dissolve, put it in an ice bath to 3°C, and obtain ammonium persulfate solution, wherein the molar ratio of ammonium persulfate to aniline is 1.2:1;

[0032] ② Dissolve 0.3 g of commercially available ethyl cellulose (90-110 mPa.s, measurement condition 5% toluene / isopropanol 80:20) in 36 ml of ethanol, stir magnetically and seal with plastic wrap. Add 36ml of distilled water dropwise to the ethyl cellulose solution through a liquid funnel, after 15 minutes, adjust the pH of the solution to ≤1 with 1.5mol / L hydrochloric acid, and cool the solution to 3°C on ice to obtain an ethyl cellulose solution;

[0033] ③Add 10.6g of aniline dropwise to the ethyl cellulose solution prepared in step ② under stirring, mix,...

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Abstract

The invention discloses a preparation method of high-conductivity polyaniline by using hydrochloric acid doped cellulose as a template. In the method, based on the conventional preparation method of the hydrochloric acid doped polyaniline, the cellulose is introduced as the template, so that the prepared polyaniline is relatively high in conductivity, and the probability of using the polyaniline as a conducting medium is increased. The method provided by the invention is simple and easy to control in the technical process, and is relatively lower in cost.

Description

technical field [0001] The invention relates to a preparation method of highly conductive polyaniline with hydrochloric acid doped cellulose as a template, belonging to the field of preparation of conductive polymer materials. Background technique [0002] At present, in the field of conductive polymers, polyaniline is the most promising conductive polymer material because it has good thermal stability, chemical stability and electrochemical reversibility, excellent electromagnetic microwave absorption performance, and easy raw materials. The synthesis method is simple, and there are unique characteristics such as doping phenomenon. However, as a conductive dielectric material for practical applications, polyaniline has its shortcomings. First, the prepared polyaniline products are all powder materials, which are not easy to form and have poor processability; second, the electrical conductivity of polyaniline, whether it is chemically synthesized or electrochemically synthe...

Claims

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Application Information

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IPC IPC(8): C08L79/02C08L1/28C08L97/00C08G73/02
Inventor 付仁春郭忠诚
Owner KUNMING UNIV OF SCI & TECH
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